[AnthonyMouse]

Most people who don't drive an abnormally large number of miles have never much cared about fuel economy because it's a relatively small part of the cost of owning a car. At $3/gallon and 12,000 miles a year, the difference between 20MPG and 40MPG is $75/month, and when gas was $1.50 it was half that.

This is even less of a concern with electric vehicles, both because any electric vehicle is already more environmentally friendly (you can feasibly charge with 100% renewable energy regardless of MPGe), and because the energy cost will always be lower than it was for gasoline vehicles, which leaves even less monetary value on the table for possible gains from efficiency improvements.

So almost nobody is going to care about that unless we end up in a world where electricity prices are dramatically higher than they are now.