I was looking for something new for camping out of the truck, and found AirBedz, They were on that shark tank show.
They make a pretty sleek air mattress that fits the back of the bed, even over the wheel wells, which in our trucks will be only 2'' smaller than the queen bed I sleep on every night!
This should be a sweet addition to the camping set up for sure! I'll get some photos up when it arrives!
Edit: Contact Jim or Rick (800) 981-2339 for a Tacomaworld Discount