Sometimes, when I put my kids in the car, I will reach through and put the keys into the ignition.
I will turn on the car, crank up the a/c, and buckle all the kids. Then, I close the doors. And I walk around the van the long way. (Remember that I drive a 15 passenger van, the size of an airport shuttle.) I walk all the way around as slowly as possible. I'll stop in the back, and just listen to the silence.
Sometimes it takes me as long as 2 minutes to get to the driver's door.
It's a shame I'm such a slow walker................