Environmentally friendly vehicles to transport visitors in and around the Expo site are being tested, with mass production expected to start in October.

The 1,000 buses and cars provided by Shanghai Automotive Industry Corporation will be used to help the Expo site stay emission-free and keep the zone a low-emission area.

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Some buses have already started trial runs along regular routes in Shanghai.

Among the vehicles will be super-capacitor buses and others that run on hybrid gasoline-electric engines. Super-capacitor vehicles are electric but they can be charged much faster than those using regular batteries.

Super-capacitor vehicles and pure electric vehicles will assume major roles in transporting visitors. Pure electric vehicles can run for six to eight hours after being charged.