Did you ever have the chance to make a bottle rocket in grade school? Daredevil athlete François Gissy applied those principles to a homemade water rocket trike, which he then zipped around the Circuit Paul Ricard at Le Castellet in France. Rainwater helped power the speedy trike, on which Gissy reached 261 kilometers per hour (kph), or around 162 miles per hour, and hit 100 kph from zero in a mere 0.55 seconds.
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