Nintendo and Visteon Corporation have partnered to bring Game Boy Advance technology to in-vehicle entertainment centers. The unit is called "Dockable Entertainment featuring Game Boy Advance". It can be attached to a mount for those long or short road trips and then once you reach your destination, easily detached from your vehicle and taken with you. The unit features a 10.2 inch display and can play CD, DVD and Game Boy Advance formats.
Check out Joystiq.com for more info and close-up screens of the device.