When dropping letters at a curbside mailbox I had to drive on the wrong side of the street. I have not had a car in years that I could slide across to the other side. Large sedans are limited to 5 passengers. Even Suvs and Minivans are not made to haul 6 mature adults, the 3rd row seats are all to difficult to get in and out of.
Most of us drive front drive cars now so there is no driveshaft tunnel to prevent us from having a flat floor. Was it really consumer demant that killed a bench seat.
I was in Switzerland 2 years ago and was in a VW van that had 9 adults in it with chair height seats 3 across.