In English.....
https://www.youtube.com/watch?v=E8bxqBEHE8A

Grand Prix motor racing in the late 1930s was dominated by the German Auto
Union and Mercedes teams. With massive financial backing from a
propaganda-conscious Nazi government, the Silver Arrows were hugely
successful. Amongst the drivers of these technologically advanced cars was a
young Englishman, Richard Seaman.
One of Britain's greatest racing drivers ever. Seaman was almost erased from
history when he left British motor-sport and chose to race for the German
Mercedes team at the height of the Third Reich.