Ian Clifford, the chief executive of the Zenn Motor Company in Toronto, has done a deal with EEStor to replace the lead-acid batteries in the small, low-speed electric cars that his firm sells for urban use.

• 如果一个司机能够像他目前加汽油的过程一样，开着电动汽车驶入电能补充站并且快速地给电容器充满电。