In case anyone else wants to put two radians in a small car. Both fit RF in the Mazda demio (mazda 2) DS2 is on the drivers side with the wedge. Plenty of room for DH to drive and DD is on the other side in her reclined mode, and still room in the front seat for legs...
I'm surprised how much room there is in the Mazda 2, pram won't fit in the boot but I use my sling most the time anyway!