I have an Element as the main family car and while I love the space, it's a challenge many days with the deeply positioned rear seats and suicide doors. Access to the infant seat wasn't an issue though, as it was easy to get it in and out of the base assuming you had enough room next to you to swing out the doors fully.
I've read some people recommending the Combi Zeus with the Element. Also Orbit car seat has a rotating base. I have no experiences with either.
Now that we have a convertible seat, I usually climb into the back to get DD seated and buckled, while MH can do it all from the side. That will be tricky once we have a convertible and an infant seat back there when #2 arrives. Honestly, if I could, I'd consider getting a more practical family car for the infant years.