"Auto racing is boring except when a car is going at least 172 miles per hour upside down"

This quote by Dave Barry is an amusing method of expressing the idea that automobile racing can be interesting when automobiles are addressing high speeds. The phrase "at least 172 miles per hour upside down" is a metaphor for the excitement of watching cars race at high speeds. It suggests that the excitement of automobile racing is not just in the speed, but also in the daring maneuvers that chauffeurs need to make in order to win. The quote suggests that auto racing can be exhilarating when cars are addressing high speeds, and that the excitement of the race is heightened when drivers take risks. It likewise implies that car racing can be dull and dull when cars and trucks are not going at high speeds.