An interesting idea. I've always liked the Mini but an electric one with that kind of price tag will have limited market appeal. People want electric vehicles primarily for city commutes. They will always still require another vehicle for long distance. I don't think many people will want a "road trip" vehicle that has to be parked after a couple hundred miles and plugged in overnight before continuing on its journey. Imagine how long it would take to drive from Calgary to Vancouver in such a thing. Californians will most likely love this thing. They've got so much urban sprawl, they can live with it. They're so much into the "green" thing, they'll have one even if it won't go more than a hundred miles.
Now, the question would be, "Would the average car owner want an electric vehicle as the extra car or would they want a highway vehicle as the extra car?" If it's the former, will they be willing to pay that kind of money? "My other car is an electric car" would work if it was cheap. Sure, there will be people who must have it at any cost, but until they can make it go for hundreds of miles on one charge, those will be far and few.