March 31, 1932
V-8 is introduced: Ford publicly unveils its V-8 engine.
April 1, 1967
DOT begins operation: The United States Department of Transportation, which oversees all interstate travel, begins operation under President Lyndon B. Johnson.
April 2, 1953
Cars drummer born: David Robinson, drummer for the American rock band The Cars, is born in Woburn, Mass..
April 3, 1987
Bill Elliott sets record: Bill Elliott sets a NASCAR qualify record of 212.809 mph at Talladega.
April 4, 1933
Dirigible goes down: 73 people are killed when the U.S. Dirigible Akron crashes off the coast of New Jersey.
April 5, 1923
Inflatable tires launched: Firestone Co. begins producing inflatable tires.
April 6, 1912
First electric starter: The first electric starters appear in Cadillacs. These starters also functioned as generators once the engine was running, a concept now being revived in hybrid vehicles.