Inflating and Deflating Tires From Inside the Car

Maybe I'm just lazy, but I'd like to press a button and deflate the tires to 7-10 psi and then inflate them by pressing another button! Is there such a system out there? It seems like it'd take some major engineering since it'd be extremely difficult to run an air line to a rotating tire... Just thought I'd ask. For now I'm content with the 12V air compressor.

Have a good read.
http://auto.howstuffworks.com/self-inflating-tire.htm

"James Bond has them, Hummers have them, most truckers have them and the military has had them for years." That's the first line in the article. ...And I thought I'd be getting a patent! lol Thanks for the link.