Bernd Rosemeyer
In 1937 Petre travelled to South Africa for the Grand Prix motor racing season with her Riley. Here she befriended Bernd Rosemeyer, who was racing for Auto Union. Competing against him and other top drivers of the day, she drove in three Grands Prix, scoring a sixth place in the Grosvenor GP at Cape Town, but failing to finish the others. In September 1937, she went to France to race a "Grasshopper" Austin in the Paris to Nice rally.