I have a trick I use to get my kids to sit calmly in the car and wait for me when I need to jump out really quick for something. Mostly its for when I need to run into the gas station or the school or something like that. Pretty much anywhere that will take under 7 minutes, give or take. Getting them all in and out will always add an hour. Anyway, its very simple. I pick the one or two that look like they're gonna start screaming and tell them that they're in charge. Then I jump out of the car and take off. I think it works about half the time.