Both Adolf Hitler and Ferdinand Porsche were influenced by the Tatras.[2] Hitler was a keen automotive enthusiast, and had ridden in Tatras during political tours of Czechoslovakia.[2] He had also dined numerous times with Hans Ledwinka.[2] After one of these dinners Hitler remarked to Porsche, "This is the car for my roads".[2][3] While the book Car Wars, quotes Hitler as saying it was "the kind of car I want for my highways".[4] In any case, of Ledwinka, Porsche admitted "Well, sometimes I looked over his shoulder and sometimes he looked over mine" while designing the Volkswagen Type 1.[2][3][4] There is no doubt that the Type 1 bore a striking resemblance to the earlier Tatra.[2] Tatra launched a lawsuit, but this was stopped when Germany invaded Czechoslovakia. At the same time, Tatra was forced to stop producing the T97.