It's a stretch but here goes..
Any mama's have a Chevy impala 2006-2010 and able to comfortably fit 3 car seats? 1 rear, 1 forward, 1 booster.. 😣
I have a Ford Focus and I’ve had 3 car seats in the back of mine. I’m sure an impala would fit 3 just fine.
Your 1 year old should still be rear facing. Until he’s 2 *at least* but I would rear face longer than that honestly. My 2.5 year old is still rear facing. I have diono radians. They’re expensive af but that’s the only car seat I can fit 3 across