Raymond Bussières
as Marcel Frontenac - mechanic
Ludek Munzar
as Frantík Projsa - mechanic
Ginette Pigeon
as Nanette Frontenac - daughter
Josef Hlinomaz
as Count Alexandr Kolovrat
Antonín Sura
as Václav Vondrich - racer
Svatopluk Benes
as Jean-Pierre Demeester - racer
O.F. Korte
as Mackie Duff - english mechanic