Shut The Car Off!
Jon: Shouldn`t we shut off the car?
Don: We need the get air conditioning. It's hot!
J: Open the windows; we'll be okay.
D: You worrying about pollution, again?
J: Global warming. Aren't you? Besides, idling's illegal. We're just sitting here.
Q: What's idling?
ANSWER: Idling is (1.) being inactive or (2.) letting a car engine continue operating but not driving:
1. Jack [has been idle] ever since he broke up with Jane; he doesn`t go out or play his guitar or have any fun. He's not doing anything.
2. "Idle the engine to warM it up.""