yeah, thats why i said the plexiglass would be put into the seat about an inch, because their backs touch, but it wont be wide enough for their back to slide into the seat at all. it will be like those damn lawn furniture where it is only a few strips of metal going across the back just so there is a back, and the holes that are there arent big enuf for ur back to go into. but my backseats would be more comfortable than those.