Sub-$400 Car PC Platform

http://www.thetechzone.com/?m=show&id=671

Computers consume power, even when they are turned off, which can quickly run down a car battery, when the car itself is turned off. The M1-ATX intelligent power supply for the VoomPC manages downtime battery use by using intelligent schemes for cutting off various functions at predetermined times and shutting the computer down completely when the car battery drops below 11.2 volts.