Cars emit less pollution when moving.

When cars are in motion, their engines operate more efficiently and produce fewer emissions compared to when idling. This is because the catalytic converter, responsible for reducing harmful pollutants in the exhaust gases, works best when the engine is running at a consistent pace. Idling, on the other hand, leads to incomplete combustion and increased emissions. Therefore, turning off your engine when parked or waiting can help reduce air pollution and save fuel. So, next time you're parked, consider turning off your engine for the benefit of both the environment and your wallet.