hi, I've got 3 1/2 weeks to go and i haven't got ours in yet.i thought the seat will be used for both cars mine and my hubby's and we always swap cars. when im in hospital my dh will put it in for when we come home. We both have put different carseats in before for my nephew and nieces so im just going to get dh to do it. He will make sure its done properly its going to have his child it it so he'll make sure its done correctly.