They are on to something big with those seats.. Look at all that room they freed up.. And the weight savings.. And if you've ever sat in one of those office chairs that has that style of back, you know they are quite comfortable. Now they need to the the bottom of the seat, too..
Simple engineering is so sexy. Hey, lets make a tiny car, and we'll make the front seats 3mm thick so the rear passengers don't have to be amputees! And we'll do the same with the rear seats and gain 3 inches of cargo space all the way across.. Brilliant!