Ok so this reflects the suns ray and your car doesn't get so hot inside. That is great, but there is no way the car is going to be cooler then it is outside, correct? Or am I missing something here?
So it's 80 outside and 80 in you car, I'm pretty sure the a/c will still be turned on. What is the point then? Until it starts to get into the low 70s I'm almost certain people will still be putting on their a/c. Even if they didn't turn it on they would open a window and gas mileage would fall. Plus when your in a car with the windows up your own body heat eventually will make you either turn on the a/c or open a window. Honestly just how much good is this law going to do.
Maybe because I'm from VA and it gets in the high 90s in the summer over here. Even if my car wasn't over heated from the sun, it's still hot as balls outside and I would still turn on the a/c.