I knew this would happen sooner or later. You can now sell advertising space on your car with Carvertising. Their web site claims $250/month, but I bet that depends on a lot of factors. Still, though, with my awful commute and the large number of wandering eyeballs on those clogged highways, I could probably pull in a pretty hefty fee. It’s a captive audience with a very nice income. (via Bird on a Wire)