I wonder how much nightly charging will run up the electric bill?
I know a guy at work who built an all-electric car (from an old Toyota, using 10 Trojan SCS220 batteries). He did a good job, and it was cool.
The effective cost-per-mile of electricity to run the car -- the cost of the kwh (in Bend, Oregon) to charge the batteries divided by their typical 40-mile range -- was a small fraction of the cost-per-mile of gasoline (I don't remember the figures, though).
However, it gets pretty cold in Bend in the winter, and batteries (lead-acid batteries, anyway) don't have as much capacity when they're cold. He found the range was a lot less than 40 miles/charge in winter use in Bend, and it ultimately wasn't acceptable for his needs. But not because of the cost to run it.
(After he dismantled the car, I bought for cheap a couple of his used batteries for my FWC! Score!)