Bottom post of the previous page:
Does Nick Mason count?He was the Pink Floyd drummer, cars enthousiast and regular customer in historics, racing GT's and Prototypes.
In Belgium we have the Wouters brothers (Kris and Koen) who are singers in a renowned Belgian band called Clouseau (they sing Dutch popsongs and yearly sell hundred of thousands of records, regularly earning them a nr1 hit or a gold record)
They race "Belcar" (the Belgian GT championship)
Franz Klammer, legendary downhill ski champion, raced Touringcars for a while in the German championship (I think it was in the ITC period, but I am not sure)
Christian Horner, CEO of Red Bull, used to race F3000 in the early 90ies