Photograph Your Car, Violate the Car-Maker's Trademark....Huh?

I just came across this ridiculous story on BoingBoing about Ford preventing a Mustang owner's group from publishing a calendar featuring photos the owners took of their own cars on the grounds that all images of Ford cars are inherently trademarked and, therefore, property of Ford.

Can American companies become any more stupid than this? I'm not quite sure it's possible.

For the record, I'm fairly confident Subaru has no such policy. And just to try it out, here's a shot of my own car (a 2005 Impreza WRX STI).