Happily I was standing in front of one of the Karrasik model Auto Union Type Cs when it was started up.
All of the cars were warmed up for a few minutes before going on the track in order to get everything up to temperature before the demonstration run. These are the specs for the Type C - and don't forget, this car was made in 1934!
6 litre V16
Single camshaft
2 x Roots superchargers
513bhp at 5000rpm
5 manual gears
Top speed of 211mph
Fuel tank capacity 200 litres
Weight 824kg