Can you accept unit with off board charger? Unit will not have on board charger system, but will have a charger box that goes with it and plugs into the wall. Off board charger system instead of On board is this acceptable? and, in regards to the doors... does it need to be a crew cab model - 4 seats w/ 4 doors? Or like a type golf cart - but doors only at the front, no doors at the back... Can you please clarify 4 passengers and doors? Thank you.