I have three across the middle row of a Honda MDX. I've frequently got my car parked end to end with a CX9 at school pickups and they seem to be pretty similar width wise. I've got two S&S hi liners and a rear facing S&S Meridien. I couldn't put the baby in the middle - it was just too hard reaching across to get her in and out so she is in the left hand side seat. DDs 1 and 2 are middle and right hand side, and their seat belt buckles are between their seats together - I was having a fit thinking if I did it any other way then one of my older girls might accidentally unclip their baby sister's seat! It is a monumental pain in the whatsit reaching down between them to clip them up, but I tend to do the middle child first having pulled the outside child's seat over a bit to give more room. I then buckle up outside child, shove her seat back over and tighten her belt again. Its workable but it makes me lust for a people mover