Microsoft and Fiat will use next month's Geneva Motor Show to demonstrate a new range of Windows-enabled cars.
The car show will see the pair show off the first fruits of a technology alliance they started in 2004.
The companies will be unveiling the Blue&Me platform, which is based on the Windows Mobile for Automotive operating system.
Blue&Me will allow Alfa Romeo and Fiat car owners to connect their in-car systems to mobile phones and other gadgets using the Bluetooth short-range wireless technology.
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Data for this connectivity will be displayed on a panel controlled by buttons in the steering wheel.
The new car models will also be equipped with USB ports, to easily enable drivers to connect their MP3 players to their cars.
A Blue&Me software product that works with the GPS satellite navigation system is also being developed by the pair.