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Nowadays heavy traffic can happen anywhere. People can get very uneasy if they are in heavy traffic. For many years people have tried to invent a car that can fly. If a person is driving a flying car, the heavy traffic would be far below him.

Many companies around the world are developing flying cars. They hope that in the future, flying cars will be useful for short trips like taxis in or out of cities. These cars could save time in emergencies(突发事件) and help reach places that can’t be reached by road. They also hope to save the space on the ground.

Last September, SkyDrive, a Japanese company, showed off its new flying car SD­03. With a pilot on board, the car was flown around for four minutes.

Flying cars need strong power to fly in the sky freely like the airplanes. SkyDrive designed the SD­03 powered by batteries (电池). There are eight motors (发动机) lifting it straight off the ground. The design also produces less pollution.

Although the SD­03’s test flight was successful, we may not see flying cars in our daily life soon. There are still many challenges in the way. Safety is a big problem. What happens when a motor fails? If a flying car is crossing a city, an accident could hurt not only the people in the car but also people on the ground. That’s why the SD03 has eight motors—some are backups (备用物).

Yet people who believe in flying cars point out that cars and airplanes faced lots of challenges at first, too. Over time, many of their biggest problems were solved. More flying cars will be seen in the sky. Tomohiro Fukuzawa, who leads SkyDrive, hopes that by 2050, people will have been able to fly anywhere inside of Tokyo in ten minutes or less.

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