The paint shop at Michigan asssembly was just reworked all new robots were put in. I'm sure if you got an early car they were still working on film builds.
I can check with some guys at the plant but the Basecoat is probably Water base but the clearcoat is solvent based.
Mine is going to be painted 1/9/12 and I was going to the plant to watch it be painted but I will be on the road.
I can find out who the paint supplier is PPG... Dupont...
They all do durability testing its probably more the paint than the application
It serious chemistry nowadays
It could be as deep as the E-coat where the problem is