i have used it in a shop, and its good stuff, believe it or not. i would have no problem using it on my car, in fact i have. PPG, Dupont, Sherwin-Williams (exact same as M-S with different labels), R-M, Glasurit, and Sikkens all have quality automotive paints. the best IMO would be Glasurit, but it is expensive.
(I did not include house of kolors in there, because nobody uses that in a production shop.)
edit: wait...cross fire? never heard of that line of M-S paints, but it has been about 2 years since i have used any M-S paint.