Air Date: November 10, 2004
A boom-lift can potentially catapult its operator 200 feet (60 meters).
When a car engine was dropped from the boom lift it barely even wobbled, much less catapulted Buster. In an attempt to duplicate the myth result, the boom lift was converted into a trebuchet, mounted on several shipping containers to give it clearance to rotate. On its first throw, it threw Buster at a steep angle towards the ground, and then collapsed between the containers, destroying it.
Running a car with air conditioning on is more fuel efficient than running with the windows down.
Tests were performed under varying conditions (55 mph versus 45 mph). The 55 mph test used a computer to estimate fuel efficiency based on air intake, not actual fuel consumption, and showed A/C was more efficient. The 45 mph test consisted of running the tank until it was empty, and showed open windows were more efficient.
*Because the original tests were inconclusive, this "urban puzzle" was revisited in episode 38: It is more fuel efficient to use air conditioning when the car is traveling approximately 50mph or more. Otherwise, windows are more fuel efficient.