I think Rudi's business was 'Grand Prix Garage' or similar...

Which is why I went in there. His wife was there but about to go shopping, I started asking questions in English and she hung around for a while because she's much, much better than Rudi in English. Very helpful.

It was a nice interlude the day after driving around the 19km Brno circuit and the day before visiting the Schlumpf Museum.