[sriramiyer]

Au contraire, I've found underground parking lots to be cool. Much cooler than their above ground cousins.

You see, I live in a country that gets very hot during summers. The ambient goes to 45 easily. And the only sensible solution is to park some place where the sun rays cannot (a) directly hit your car because that would cause the car to become uncomfortably hot (b) cannot be reflected through to your car via multiple other surfaces (e.g. other cars, walls, etc).

The underground section of the parking lots perfectly suit this criteria, even though it's technically the same building with under-and-over ground parking facilities. If you're wondering where I'm talking about, it's the parking lot at the Bahrain City Center. (One can hope that very few people residing in Bahrain read hackernews, and my supposedly secret strategy doesn't leak out to everyone).

What I could do would be to take actual thermometric readings over the course of this summer for underground vs. above-ground parking spots.