Okay...so my tint guy asked me if I wanted heat protection or light protection. When I said heat protection, he showed me the 3M Chrystalline stuff. He was able to demo it for me. Apparently 3M has put a lot of R&D behind this stuff. So....I now have it applied to all my cars, ASAP. And today, I had him do the new baby. There are darker options, but I go with the 40% stuff.