The solution to summer time auto-greenhouse effect

Problem #1: Energy shortage, and pollution from "traditional" energy sources.

Problem #2: Exposed cars get too hot in the sun in the summer time.

Neato solution: The picture above, which in case it's been removed, is a parking lot with a solar-energy (PV) roof. It's owned by the USPS in San Francisco, and they predict it will pay for itself in 7 years. Full Story

Minor problem #1: People say solar cells are ugly.
Solution: Put them over things that are uglier (Parking lots).

Cool stuff.

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I was going to stop there, but a more elegant, simpler solution is this:


WALKING

Pollution free, solar powered (yes, you are solar powered, because you eat stuff which gets its energy from the sun (plants), or from things that get eat those things (herbivores), or rarely from things that eat the things which eat the other things that get their energy from the sun (carnivores)), and also keeps you in shape, which helps lead to a better life.