Great idea. How about a SMS gateway where you could text your ZIP code and it would return a list of garages and number of open spaces. this would be a lot easier than typing in a web address, and would be quick enough for you to do it at a stop light.

Also, I know some people that work at a company that makes the software for said garages.. I could talk to him / connect you two.

Mail me: valor _at _schnooze _dot _com