The speeds of each wheel need to be controlled precisely. So two separate controllers or motors might not work well if you just hook up two different motors.

Bring it on. I would definitely use. Some people may be very particular about the kind and brand of washer fluid though.

The roof glass is probably the biggest issue. Get one with a metal roof and it should be better insulated for sound and heat.

Yeah California electric prices suck. They need to fix that. I pay a flat 13 cents all year in NJ. Then I have solar on top of that to effectively cut it in half.