Who Holds Back the Electric Car?

Is it the Stonecutters? Maybe, as David Friedman indicates it's still just too damn hard to build a practical one:

Tesla Motors, a Bay Area startup, has announced that they will be bringing a fully electric vehicle to market in about a year. The relevant facts:

1. Range: 250 miles per charge.
2. Recharge time: 3 1/2 hours with a 240 volt/70 ampere source, longer with ordinary house current.
3. Configuration: Sports car.
4. Price: $85,000-$100,000.
5. Operating cost: 2.6 cents/mile if electricity is 13 cents/kwh.

Still, I hope that rich people buy it. The more the rich encourage this, the more practical and less expensive those cars will be.