I started a different topic about the Toyota quality crisis going on right now regarding sticky gas pedals but in researching for a response in that topic I came across a pretty good article that lists some specific criteria for designating a car as "American Made" http://www.automotiveaddicts.com/inthenews/07-10-06.html Should spark some debate I would think unless you summarily agree with the results and in that case what car are you driving?
In looking at the article again I am not sure how accurate it might because it still has Chrysler hooked up with the Germans. Obviously that hasn't been true for awhile.