there were quite a lot BMW/Audi/Merc competitive commercials in the US market. to name a few:
http://www.youtube.com/watch?v=VohEkWMkbsI
http://www.youtube.com/watch?v=auEdEYY3ao4
http://www.youtube.com/watch?v=VohEkWMkbsI
http://www.youtube.com/watch?v=auEdEYY3ao4
remember a BMW (or audi, or benz) comercial where it showed a spy type scaping from several bad guys, and all the bad guys had the competitor car (i think the bad guys had mbenz) and they were all sliding off curves and crashing...