I mean, I don't even get why people just idle their cars like that.

I've been told it's to keep the air conditioning on, but I see people idling with their windows rolled down, in the summer and winter alike. I've been told it's to play the radio, but most of the time I can't hear any radio and in any case, come on- you got a phone right?

There's no good reason that applies in most situations and that makes it even harder to understand. Because it means people just ...don't turn their engine off when they're only stopped for a while. Because. I don't know. It costs action points?