Right now we have three I have my youngest(tell this one is born) in the middle and my two older ones on ether side. But were getting a van today so Im not sure hoe they will be arranged yet
I put each kid in opposite ends...just something about the older kid being close enough to touch unsupervised didn't sit well with me.
I have a 3rd row suv and I will be moving my 4 yr old to the back and put the baby in the middle of the 2nd row.
My step son was a lil over 2 when my lil one was born and i started with baby in the middle. He would throw toys, paci, sippy cup whatever he had at the baby. He did it all the time though but in a car i wasn't holding the baby to stop it you know. So i had to put baby by the other window and keep his seat canopy open to block flying objects.
I'm putting my 6 year old in between mine. My other son will have just turned 1 when she's born and my 6 year old is a great help.