Battles over Buy American

First John McCain brags about buying American, rather than foreign, cars.  Then Barack Obama puts together a TV ad alleging that McCain lied and actually owns several foreign-made cars.  You can see the ad, which includes the McCain statement, here:  http://my.barackobama.com/page/community/post/amandascott/gGg9HV

I was hoping trade policy would play a role in the election, but this was not what I had in mind.