[miket]

Gas cars should be rated in miles per gallon and electric in miles per kWH. No one is going to be buying and putting gas in their battery or electricity in their engine.

For the end user mpge is really silly. If a consumer wants to do a cost comparsion between an electric and gas vehicle instead of on from the same family than its still useless because electricty prices vary greatly, I pay twice as much in CT per kwh than most states.

edit: mpge is not based on economics and since it ignores generation efficiency its not base on anything usefull really.