I was at the San Jose Grand Prix this weekend and noticed they use 03/04 Cobra pace cars. I thought that was pretty cool considering they are no longer in production. I did some research on it and it looks like they take VIP guests on fast laps around the track.
http://www.raremethod.com/menu/Apr13.2005-News
http://www.raremethod.com/menu/Apr13.2005-News