What should you pay attention to whilst parking in a closed parking lgarage?

1. The engine should continue running for at least 20 minutes, until it cools down.
2. Correct answer: The engine should not be left running for a long time, since the parking garaget is poorly ventilated.
3. The engine should not be left running for more than half an hour continuously.
4. Nothing. There are no restrictions on parking inside a closed parking lot.

WhyIn a closed parking garage do not leave the engine running for long: it is poorly ventilated and exhaust is toxic.