Microsoft may have made news at CES last week by putting a computing platform into Ford cars, but small-PC specialist Shuttle showed off a prototype of an entirely different sort of Microsoft-based car computer: one that runs Windows Vista.

Shuttle's car PC design will be installed out of the way - under the seat, ideally - is built to withstand bumps and vibration, and has a remote control and a small colour touchscreen that's designed to mount on the dashboard. Turn the car on, and the PC will spring to life; power off the car, and the PC will go to sleep.

Shuttle thinks that consumers might, eventually, want to run Vista in their cars for applications such as digital entertainment. However, initially, the company hopes to sell the systems to specialist markets such as taxi fleets and police departments. No details about pricing and availability were revealed at the show.