Who drives the new car?

I have my car ( graduation present) and it is okay for family size. It currently doesn't have any A/C so at 31 weeks I'm pretty miserable. My husband traded in his old beaten down 2005 car and we got a new family car. It's a small Suv and we love it. But who drives it?

My husband dips and I told him no dipping in the new car as he is pretty messy. So if he drives mine to work and for recreational, then he can dip as its a 2007 and has some dirt on it anyways. I just feel bad taking over the new family car..because it is a family car. But it's so nice to be able to have the air conditioning and the safety features...I don't want to take that away from my husband. We both work, we both have our own lives, he's in the military so the car he drives would be the one with all of his military stuff in it....so what would you do? Just let him take your car and pack it full of his stuff and take over?

UPDATE: I went to talk to him about it because it's just awkward and I didn't want to pick up the wrong keys and get anyone butt hurt tomorrow. He actually made the joke " well it's in my name" which is true. It is but only because the bank told us it would hurt the loan if I consigned because my credit score is less than his...so it was a low blow. Think I'm just going to put the baby in my car and get the AC fixed and let jackass drive his car.