I think that in 10 years the present generation of electric cars will be a thing of the past. Storage batteries add far too much weight to the car. Most major car companies are now investing heavily in Hydrogen. More efficient and no storage batteries necessary. Actually, the Elise would be the perfect car for Hydrogen,except that I ,personally, like the sound of the internal cumbustion emmanating from my stage 2 exhaust. Not ready to give that up yet!