Excuse me, they do have a purpose.

Letting you wind the windows up after the key is off as you walk away.

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Balls.

when people tell you "excuse me u left your car running" give the old "YEH, Keys are in it jus bring it back in one piece aye..." always gets a few wierd looks..

hahahahahaha i had some guy come up to me and tap me on the shoulder to tell me my car was still running

haha i get that to and get told my lights r still on