While I realize that many, if not most, buyers of the Buick LaCrosse do not transport building supplies or tools in their vehicle, I do. When I go to the lumber yard for some pipe, 2x4 studs, or other long thin items; it is helpful to be able to lower the little door in the back seat and not lose the ability to take my family along with me. This is especially true when I take these building supplies to my son's home over two hours away to help with his home.
I also find it useful when I take long handled rakes and shovels to my son's place to help him or to church for the work-bees.
Of course, there are many times when I need the seat backs lowered to accommodate more than just the limited number of longer items but it is nice to not have to lose the rear seating capabilities when just needing a little access.
That's what prompted me to ask who has them and who doesn't. I was at Home Depot one day with the car and decided to pick up a couple of 1x2s. It wasn't really a problem as I simply folded down one of seat backs but it got me wondering how come my car didn't have the pass through and how many others out there were like mine.
Just how big is the opening anyway? From the photos I've seen it doesn't appear to be very big.