You are missing the fact that when you convert the AC power to DC (so the car can consume it) you lose roughly 20% of the energy. When it's all over they use more fossil fuels than your fuel efficient commuter cars.
But it makes Americans feel good, should take a look at Germanys failed EV world.
Also, for what its worth, they suck at the road course track. Batteries overheat and go into limp mode. Takes a fortune to get one track ready. My Boss 302 does just fine.