Ford completed their first Model T vehicle at a Ford plant in Detroit, Michigan.
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Howard Hughes designed and built the world's fastest plane called the H-1 racer, then, on this day, flew it at a new world speed record at 352 miles per hour in Santa Fe, California.
A strike began at a General Motors parts factory.
The German automobile manufacturer, Volkswagen, was founded.
Jessi Combs broke the female fastest land speed record when her jet-powered vehicle reached a speed of 522.783 mph (841.338 kph).
More than 80 people die in the Le Mans car race disaster.
