Hot Hardware writes the upcoming 2009 Audi Q5 car will feature a audio/visual interface control panel powered by a GPU from NVIDIA. There are few specifics but I think the chip they're talking about is not really a GPU but one of NVIDIA's new system-on-a-chip (SoC) Tegra chips.
"The Harman/Audi platform sets new benchmarks for automotive navigation, communication and wide-screen entertainment. A high-performance NVIDIA graphics processor ensures that navigation map images transition smoothly, even when the vehicle quickly changes direction. Driver orientation is enhanced by a three-dimensional landscape view that reproduces true-to-scale terrain. Photorealistic depiction of points of interest allows visual matching of key landmarks to the in-car display, and identification of commercial points of interest is enhanced with well-known brand logos. The display offers a bird's-eye view of more-distant destinations and features automatic close-up zoom at intersections."
"Available map media cover 43 European countries, the United States and Canada. Precise audio route instructions and voice commands for audio, telephone, address book and navigation functions are supported in eight languages. The system supports connection of external devices such as USB storage media or an Apple iPod; a jukebox function allows for creation of personal music playlists. The digital radio accepts both European Digital Audio Broadcast signals and U.S. satellite services. An integral four-band GSM cell phone supports Bluetooth connection and accepts a SIM card from a driver's personal phone."