Audi is one of the first automotive brand to introduce their own multimedia cell phone; the Audi A1 Metroproject Quattro Concept. The concept audio car phone, designed for the new hybrid A1 Audi car prototype, fits into a docking station which allows it to interface with the vehicle's multimedia system. The system is comparable to the MMI system currently used in upper-class Audi vehicles. The Audi phone functions as an access authorization system for the vehicle and can be used as a mobile phone, navigation unit, audio and video player all in one.
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