If you ever have to sleep in your vehicle, and can plan ahead for it, try this PVC hammock, and an air mattress

It requires 2 inch PVC Pipe for the main span and 1.5 in for the cross pieces. Sleeves were sewn in the fabric and the PVC was slipped through and connected together. Then ran rope through the long pieces and through a hole in 1.5 in pieces wrapped in some soft hose that won't chew on your paint...   that are used to prevent the rope from slipping back through the door closure. You can store it in the pop top gap up top when not in use.

Beats the hell out of trying to sleep across a bench seat

http://www.thesamba.com/vw/forum/viewtopic.php?t=381648&postdays=0&postorder=asc&start=0&sid=a7d67de2d4e8b85f7a0d8464b318cb75