StreetDeck is software that lets you control a computer while driving.
It is sold as a software only product for those brave enough to build and install a carputer on thier own.
It is also sold bundled with the Infill T3 hardware which includes all hardware and software you need to do navigation, radio, mp3s, satellite radio, etc. http://www.mp3car.com/store/product_...31973122115f85
The InFill T3 looks, acts, and installs much like a typical headunit would, but gives you the power and configurability of a computer. It has speaker outputs and antenna hookups that will work with your car just like a head unit would.