"Silent Speedsters: How Sports Cars Quietly Evade Noise Regulations with a 3-Word Trick"
Loud sports cars are able to bypass government noise regulations thanks to a three-word loophole in the pass-by test specifications. The test measures the noise level of vehicles during normal driving in urban traffic, but the loophole allows powerful vehicles to choose a gear with an acceleration rate as close to 2.0 m/s2 as possible without exceeding it. By testing in higher gears, where the engine doesn't rev as high, the cars can stay within the noise limits. This loophole preserves the distinctive exhaust sound of sports cars and prevents them from being excessively quiet during testing.