Luigi Fagioli at a pit stop, Germany, 1930s.
© NMeM / Zoltan Glass / Science & Society Picture Library
Photograph by Zoltan Glass. Mechanics preparing Fagioli's Mercedes-Benz W25 GP racing car. Alfred Neubauer, (right), manager of the Mercedes Grand Prix team, devised a system of boards and flags to keep the drivers informed of their speed and position.