Remember this, smarties, any of you can get your car on TV if you register with places which make use of vehicles. I had my black Yamaha R1 used in a music video, though I don't have the video...all I know is that they paid me 200 bucks or something, borrowed my bike for a few hours (still shots, not ridden) and then I went back and picked it up when they were done.
If you trust the people to handle your vehicle (they do a pretty good job of being careful), you can make some easy money loaning your smart for various production shoots.
I live near/around Los Angeles so there might be more of a need for this here than in other locales. If you're near any big-city chances are you can make a little extra money with your smart in this fashion.