1 . It’s a known fact that emissions (排放物) from gas-powered vehicles are harming the atmosphere. In response to this, Porsche, the German sports car company, began producing e-fuels at a pilot plant in Chile last year. Currently, the fuel will be used only in sports cars at Porsche’s performance and experience centers.

E-fuels are made by passing electricity through water. The electricity separates the hydrogen and oxygen from water. The hydrogen is then mixed with CO₂ to produce a liquid e-fuel, which can be produced using many renewable energy sources, such as solar and wind power. E-fuels follow the chemical structure of gasoline, making it possible for gas-powered cars to run on e-fuels almost without any change.

E-fuels can help ease the transform away from gas-powered cars, for those who may not be able to afford electric vehicles (EV). It will also help to reduce waste by keeping gas-powered cars in service, instead of throwing them away prematurely. Additionally, the use of e-fuels will not require new facility to be built unlike EVs. Existing gas stations and cars will be able to stay in use, which is already a big saving.

Despite the many benefits, opinions differ on whether e-fuels are truly eco-friendly. E-fuels are widely said to be nearly carbon neutral (碳中和), although an independent study indicates that e-fuels release the same amount of CO₂ as gasoline. Since e-fuels are still being developed and tested, their true impacts are still unknown. Meanwhile, e-fuels are very expensive to produce, partly due to energy loss during production. Unfortunately, only about half of the energy used in producing e-fuels is actually transformed into fuel. Additionally, only about 16% of the energy used in e-fuel production is actually used to power the car. Whereas, about 70% of energy is preserved when powering an EV. Even though the use of e-fuels will preserve existing facility, it will still take time and money to integrate it into everyday life. Currently, the price of e-fuels is nearly double the cost of regular fuel.

E-fuels are still a work in progress. Though opinions are divided on e-fuels, with more testing and development, they have been considered another way to help fight against the climate crisis. “There are currently more than 1.3 billion vehicles with combustion (内燃) engines worldwide. Many of these will be on the roads for decades to come, and e-fuels offer the owners of existing cars a nearly carbon-neutral alternative. With the e-fuels pilot plant, Porsche is playing a leading role in this development,” said Michael Steiner, member of the Executive Board for Development and Research at Porsche AG.

Electric scooter safety

If you look around the streets of London, you’ll see the many methods people use to move around. Whether it’s on a commute to work, a trip to the shops, or a sightseeing excursion, there are people on buses, the Tube, cars, motorbikes, bicycles and even roller skates. The roads are already congested (jammed); and now there’s a new addition: electric, or “e-scooters”.

This traditional children’s vehicle has become more sophisticated over the years. And now, with the addition of a small electric motor, it’s become a cheap and easy mode of transport. Scooting around town can be fun and doesn’t involve much effort, so it’s no wonder they’re becoming increasingly popular in cities around the world. But following what’s believed to be the first fatal accident involving an electric scooter in the UK, questions are being asked about their safety and whether traffic laws should be changed.

Some scooter riders have been seen on pavements; others on the road jumping red traffic lights, adding to the frustration of motorists stuck in jams. In the UK, the law states that riding one on the public highway or pavement is forbidden. Riders currently face a £300 fixed-penalty notice and six points on their driving licence for doing so. But, despite this, it seems the increasing popularity of e-scooters means they can be seen everywhere. And now users are calling on regulations to be changed.

The UK government is looking at how safely they can be used on the road and is ‘reviewing’ the law. But its transport minister, Michael Ellis, has told the BBC that: “Micromobility products are appearing in countries across the globe and are an exciting innovation for which we know there is demand. However, safety must always be our top priority when considering their use on public highways in this country.”

There’s no doubt there are dangers in riding a two-wheeled scooter. Despite the fact that some of them can exceed 30mph, they sometimes only have one brake and no lights. They also become unstable if the rider hits a pothole, and however confident the rider may be, larger vehicles on the road make them vulnerable (easy to be hurt). So it seems more work needs to be done to give e-scooters a safe and legal space to travel in.

4 . Self-driving vehicles will rely on cameras，sensors and artificial intelligence (Al) to recognize and respond to road and traffic conditions.But sensing is the most effective for objects and movement in the neighborhood of the vehicle.Not everything important in a car’s environment will be caught by the vehicle’s camera.Another vehicle approaching at high speed on a collision(碰撞)track might not be visible until it’s too late.This is why vehicle-to-vehicle communication is undergoing rapid development.Our researches show that cars will need to be able to chat and operate on the road，although the technical challenges are considerable.

Applications for vehicle-to-vehicle communication range from vehicles driving together in a row，to safety messages about nearby emergency vehicles.Vehicles could alert each other to avoid collisions or share notices about passers-by and bicycles.

From as far as several hundred meters away.vehicles could exchange messages with one another or receive information from roadside units (RSUs) about nearby incidents or dangerous road conditions through 4 G network.A high level of Al seems required for such vehicles，not only to self-drive from A to B，but also to react intelligently to messages received.Vehicles will need to plan，reason，strategize and adapt in the light of information received in real time and to carry out cooperative behaviors.For example，a group of autonomous vehicles might avoid a route together because of potential risks，or a vehicle could decide to drop someone of earlier due to messages received，a foreseen crowding ahead.

Further applications of vehicle-to-vehicle communication are still being researched，including how to perform cooperative behavior.

5 . One day, when I was going to check in at an airport, I noticed there was a big problem. The counter person was telling everyone that all the planes were having problems and they would not be able to fly! And it was suggested that a bus would be provided to take us to Seattle. Everyone was worried, as we only had an hour and a half to make the connecting flight, and the bus was not even at the airport yet.

Finally, the bus pulled up, and the driver said, “They just pulled me out of bed after an all-night shift, and they expect me to get you to Seattle in time to catch your fight. Good luck!”

Needless to say, everyone was in a really bad mood. I was loading my baggage into the bus and had hung my banjo (班卓琴) over my back when the bus driver said, “What? Are you going to play that on my bus?” “Well, I really did not plan on it,” I replied.“I was only kidding,”said the driver. But I started thinking about it, and I pulled out the banjo. A worried, angry woman said, “Well, what if I don’t like it?” “Then tell me and I’ll stop,” I replied.

We drove off, and the tension made the atmosphere inside the bus horrendous! Then I started performing the old standard Blue Skies. In a few minutes, I noticed everyone was singing along. I started to sing, too, and before long, the whole bus burst into song.

One song led to another. Everyone laughed and sang, with food passed around the bus, and before long, the airport was in sight.

The bus driver called, “We made it! We never would have done it without the help of our banjo player.” Shouts of approval rang through the bus. People exchanged addresses and invitations to visit, and a few even exchanged hugs.

A few weeks later, my mailbox was filled with letters from my new friends. Their letters reminded me of how, by reaching out with just a song or a bit of friendship, you can turn a very tense situation into a peaceful experience.

Is traffic a big problem where you live? Increased cycling may be the answer. Where are the best places to live and cycle? A new report lists the best bike—friendly cities around the world.

Top of the list is Amsterdam, the bike capital of the world. An incredible 40% of all traffic movements are by bicycle. There’s an extensive network of safe, fast and comfortable cycle routes. Copenhagen, the city of bikes, is a city where 32% of workers cycle to work because it’s fast and easy. Berlin is another European city that’s great for cycling. The city has about 80 kilometres of bike lanes, and 50kilometres of pavement paths. Cycling accounts for 12% of total street traffic.

Barcelona has been praised for its cycle service “Bicing”. It’s a bicycle service that allows users to take bicycles from any of the 100 stations spread around the city. Later, they can leave them at any other bike station inside the urban area of the city. The city has created a “green ring” that surrounds the city area with a bike path. There are 3,250 parking spaces for bikes at street level at present. Barcelona City is also building a new underground car park for bicycles.

The UK has its cycle friendly cities too. Bristol is the birthplace of “Sustrans” the cycle-route charity which was formed 30 years ago. One of their projects was turning an old rail line between Bristol and Bath into a bike route. Other bike friendly cities in the UK include Cambridge and York. Cambridge is an old city but has still managed to build good cycle infrastructure (基础设施), and cyclists are considered at every stage of any new developments.

Bicycle is a most popular means of transportation in China. Nowadays, riding a bicycle is also a good way to support low-carbon living. Beijing can be one of the best bike-friendly cities in China. There are many riding routes in Beijing for outdoor-lovers to explore. Cyclists can get close enough to experience the history and culture of Beijing, including the Forbidden City, Drum Tower, the Water Cube etc.

8 . The Intelligent Transport team at Newcastle University have turned an electric car into a mobile laboratory named “Drive LAB” in order to understand the challenges faced by older drivers and to discover where the key stress points are.

Research shows that giving up driving is one of the key reasons for a fall in health and well-being among older people, leading to them becoming more isolated and inactive.

Led by Professor Phil Blythe, the Newcastle team are developing in-vehicle technologies for older drivers which they hope could help them to continue driving into later life.

These include custom-made navigation (导航) tools, night vision systems and intelligent speed adaptations. Phil Blythe explains: “For many older people, particularly those living alone or in the country driving is important for keeping their independence, giving them the freedom to get out and about without having to rely on others.”

“But we all have to accept that as we get older our reactions slow down and this often results in people avoiding any potentially challenging driving conditions and losing confidence in their driving skills. The result is that people stop driving before they really need to.”

Dr Amy Guo, the leading researcher on the older driver study, explains, “The Drive LAB is helping us to understand what the key stress points and difficulties are for older drivers and how we might use technology to solve these problems.”

“For example, most of us would expect older drivers always go slower than everyone else but surprisingly, we found that in 30mph zones they struggled to keep at a constant speed and so were more likely to break the speed limit and be at risk of getting fined. We’re looking at the benefits of systems which control their speed as a way of preventing that.”

“We hope that our work will help with technological solutions to ensure that older drivers stay safer behind the wheel.”

10 . I was desperately nervous about becoming car-free. But eight months ago our car was hit by a passing vehicle and it was destroyed. No problem, I thought: we’ll buy another. But the insurance payout didn’t even begin to cover the costs of buying a new car—I worked out that, with the loan (贷款) we’d need plus petrol, insurance, parking permits and tax, we would make a payment as much as £600 a month.

And that’s when I had my fancy idea. Why not just give up having a car at all？I live in London. We have a railway station behind our house, a tube station 10 minutes’ walk away, and a bus stop at the end of the street. A new car club had just opened in our area, and one of its shiny little red Peugeots was parked nearby. If any family in Britain could live without a car, I reasoned, then surely we were that family.

But my new car-free idea, sadly, wasn’t shared by my family. My teenage daughters were horrified. What would their friends think about our family being “too poor to afford a car”？(I wasn’t that bothered what they thought, and I suggested the girls should take the same approach.)

My friends, too, were astonished at our plan. What would happen if someone got seriously ill overnight and needed to go to hospital？(an ambulance) How would the children get to and from their many events？(buses and trains) People smiled as though this was another of my mad ideas, before saying they were sure I’d soon realize that a car was a necessity.

Eight months on, I wonder whether we’ll ever own a car again. The idea that you “have to” own a car, especially if you live in a city, is all in the mind. I live—and many other citizens do too—in a place that has never been better served by public transport, and yet car ownership has never been higher. We worry about rising car costs, but we’d be better off asking something much more basic: do I really need a car？Certainly the answer is no, and I’m a lot richer because I dared to ask the question.