I've never used one of these carriers before but I'm considering it for my electric scoot. Check out this site:
There are pictures of smart cars using these carriers in the PHOTOS section at the top of this page. You can probably do a search and find those pictures. GOOD LUCK! I love my smart car and would do anything to keep her!
Actually, I traded it in for another car last week.
PM Gary Bryers...he has a good set up (actually a couple of them depending on the road trip), but I don't have any pics...
This will do the trick: