"It is nice to drive a bus without a tailpipe," said Feng, who has recorded nearly 80,000 kilometers in the all-electric bus since he was chosen to drive the electric shuttle bus for the Beijing Olympic Games in 2008.

"Driving an EV is quite similar to driving a conventional bus, except that it has meters showing the battery level and battery temperature instead of the gas level," said Feng.

When Feng started out four years ago, there were few electric vehicles in China. Now about 19,000 electric vehicles are running on China's roads, mostly buses, taxis or vehicles for public services, like mail delivery or garbage collection, according to the Ministry of Science and Technology.

China, a late-comer to the global auto industry, is gearing up to take the lead in meeting the industry's "go electric" trend. It has invested heavily to develop EVs and to subsidize them through trial projects, such as those for buses.

There are two types of electric vehicles - hybrid-electric vehicles powered by both batteries and gasoline and all-electric vehicles propelled by only electric power.

After exploring this field for more than a decade, China has decided to focus on the development of all-electric vehicles. The country is currently focusing on lithium battery research in hopes of increasing the range of EVs and leading the market.

The all-electric No 90 bus runs a 33-km route. Feng Xue said he can do two trips before changing batteries at the terminal station. The electricity costs about one-sixth of what it would cost to burn oil.

Feng said the range anxiety about the electric bus will be "temporary". "Just a decade ago, the cell phone battery was big and unstable. Now it does not bother us anymore. Technological breakthroughs may happen at any minute," he said.