Polaroid had a set of cameras that produced 20x24 inch prints. I believe there were only 6 or so made and if you wanted to use one, you rented it and the support team who actually ran the camera. When Polaroid announced they were ceasing production of their instant film, I wondered what was going to happen to those cameras.
Wandering around the web this morning, it turns out that the cameras and the rights to the processes have been bought by another company who will continue to provide this service. Now if only I had the money to rent one of these things and a subject I thought was worth it.