Stella Li, BYD's senior vice-president also said the company plans to start test-marketing an all-electric battery car in the US next year, shipping as many as 50 e6 electric cars to customers in southern California, after almost a year's delay, the report said.

"Initially we would ship e-buses from China, but eventually we would have to localize production," the report quoted Li, who added that at least one electric bus would be shipped by the second quarter of 2011.