Re: intro and project idea
There are all electric buses out there. Nashville sold two several years back (I was actually contemplating buying one, and was trying to figure out how to get the darned thing home). Chattanooga has some for their transit system. So, they are out there. Not sure how much a used one would cost. If you could find one for a reasonable price, you could see about adding a big generator to recharge the batteries, thus improving mileage (not sure if you could get a big enough generator to supply enough power to keep it going down the interstate constantly, but maybe it'd be enough to turn a 75 mile range into 100?). Oh, and if you park at a campground, remember that you already paid for all the electricity you can use (I'd really, really recommend wiring for 50amp).
It is a neat idea though. If you could get decent mileage out of one, it would be awesome to go down the road with NO engine noise whatsoever. Oh, and you could ignore everyone's advice about having a separate house battery bank. Once the batteries are fully charged, you could last for days/weeks/months boondocking.