I'm not a fan of the flag on anything except the flag ... I would feel that I am disrespecting the flag if I had it painted on my car (especially painted wrong) or as a bathing suit or whatever. I wear a flag patch on the sleeve my my EMT gear ...
I'm not knocking the guy because it's his car and if he likes it then more power to him, I would never do it, but then again I would never do a lot of things that people have done to their cars, who are we to judge?!