I have seen lots of exclusive cars at Spa Francorchamps... But this must be one of the most rare cars I have ever seen in action at Spa.

The Type C represented the pinnacle in the development of racing car that had been designed by Ferdinand Porsche and which ran its first race in 1934 according to the 750 kg formula (max. mass, dry, without wheels and tyres). The key design feature was the 16-cylinder engine positioned directly behind the driver (mid-mounted engine). It was the most successful German racing car, winning three of the five Grand Prix races, half of the circuit races and all the hill-climbs that Auto Union entered.

Engine: 16-cylinder in V arrangement, with Roots supercharger
Displacement: 6,005 cc
Power: 520 hp at 5,000 rpm
Maximum speed: 340 km/h
Series: 1936-937

Source:http://www.audi.com/corporate/en/comp...

This is a replica car. But what a look and what a SOUND!