Final answer:
The exhaust clouds behind the tailpipes of running automobiles in cool or cold weather are an example of condensation clouds.
Step-by-step explanation:
The 'exhaust clouds' seen behind the tailpipes of running automobiles in cool or cold weather are an example of condensation clouds. When water vapor, which is a byproduct of the combustion in the engine, comes into contact with the cold air, it condenses into tiny water droplets, forming the exhaust clouds.