Large-scale production could drive down the cost of the battery pack and electric motor by 30 or 40 percent, still leaving electric cars more expensive than gasoline-powered ones, Mr.Wu said.

• 大规模生产的成本可能压低的电池组和电动马达30或40个百分点,还留下电动车成本比汽油发动的,先生吴表示。