A new Smart car ad shows it carrying a Ford Exhibition. Oct. 17, 2012 — -- What do you get when you put a 7,000 pound SUV on top of the frame of a sub-2,000 pound two-person Smart car ...

Putting a Smart car—which is both light and carries at most four people—on tracks is “using this very cost-intensive, heavy-duty infrastructure for a very low return,” Supawanich says.