Well actually MB stated that it takes two minutes of curing time under a certain type of UV Lamp which has a predetermined wavelength. If the paint doesn't get enough of the UV light it will be too soft, if too much it will lose its flexibility and crack. To me this sounds like a disaster for body shops, imagine getting your car back after an accident and after a few weeks your paint starts to flake off. I hope that MB is also considering the "Real World" when they finally complete development of this paint.
Hmmm maybe now would be a good time to invest in a high tech paint shop!