Has anyone had 3M's Crystalline tint installed, this material is supposed to be the very best. It is the latest "nano" technology and stops solar energy (heat) from entering the vehicle. The beauty of it is, that it is clear, therefore it can be installed on the windshield. With our marginal air conditioning system I am thinking that if the A/C did not have to overcome the heat of the sun the car could be more comfortable. Driving around in the Florida summer, I can feel the heat pouring in, the A/C does not stand a chance. This Crystalline is only now becoming generally available, but apparently has been sold for testing out west for a while now.