How exactly do you do that? Do you own a shop, or work for Behr?

EDIT: The reason I ask is that I dont want to do anything that would hurt anybody's career or livelyhood. All I'm really wanting is some help and/or parts so I can do this for myself. If there's enough interest, I'd build a kit, but it's definitely open-source and should be easy enough to plug in.

I'm just tired of my feet being freezing cold in the winter, with the heat in full defrost mode, and honestly I'd like to eventually work more functions into the microcontroller at a later point. The microcontroller, as it stands right now, will probably be idle most of the time.

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Java Developer/Linux SysAdmin

Current:
*1984 300D ~200K,1989 MR2 250K, 2012 Ford Fusion 4.5K (fiance's car to replace the uber-unsafe cavalier)
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Past: 1998 Chevy Cavalier ,2005 Saab 9-3 2.0T, 1996 Mazda Protege, 1974 Porsche 914 2.0, 1997 Land Rover Discovery 4.0L/5Speed, 1995 Jeep Wrangler