Dragula?
The concept reminds me of NeilBlanchard's CarBEN:
http://ecomodder.com/forum/showthread.php/carben-model-1-24th-scale-model-3d-computer-11969-3.html
Getting the wheelchair between the taillights is only the first problem; getting it to a left- (or right-)front driving position is next. I think it would be easier to move the controls. ...except maybe the steering.