Grand-Prix racing in Europe was headline news, and took up long hours of radio time every weekend. With a quarter-million spectators often attending a single race, it was a leading venue of public attention which Hitler was unlikely not to take advantage of. With Motorshow pageantry, official public demonstration of the cars in urban stadium parks, racing was everywhere and it was hard to escape knowing what was going on through the Grand-Prix season. Here we see a Mercedes being raced to the top of a remote Alpine pass.

from Driving Forces, page 134