1991 Audi Avus Quattro
Audi Avus quattro concept made such a deep impression at the 1991 Tokyo motor show.
The Avus quattro's engine was supposed to be a 6.0 L 60-valve W12 engine producing 509hp and the car had an aluminium space frame, which made it a lightweight and safe automobile.
The Avus was never going to reach production, but it set the foundations for one of the most impressive, design-led brand-building exercises in history.
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