The legendary 24 Hours of Le Mans motor race was created in 1923, when cars' top speeds hovered around 60 mph (97 km/h). Thirty years later, top speeds had more than tripled, with little change to the course. In the 1955 race, a narrow pass near the pit stop caused racer Pierre Levegh to hit another car from behind while traveling at about 150 mph (240 km/h). Levegh's Mercedes went airborne, and parts flew into the stands, killing Levegh and more than 80 spectators. Why did the race continue?
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