Okay, sorry for the delayed response, I was out of town for a couple days. So first and foremost, what is your budget then? What would you be willing to spend?
Because heck, it IS possible to give it plenty horsepower (still with DC brushed), and using some A123's have a 50 mile range and a 1-2 hour recharge time.
IMO, it's just not one of those applications where the payoffs are very attractive for how much you spend. You need to get into small to midsized cars/trucks to get the payoffs, you know?
But hey, it would be neat to see something like this to come off the ground if you have the wallet to do it.