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Home again: the last Auto Union Type D twin-supercharger Silver Arrow returns to Audi - The most striking detail of the Auto Union Type D in the version dating from 1939 is the air scoop at the back, which was reshaped to make room for the second supercharger...

The most striking detail of the Auto Union Type D in the version dating from 1939 is the air scoop at the back, which was reshaped to make room for the second supercharger beneath. This additional device boosted power output from 420 to 485 horsepower.

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