One other thing.
I have been following these folks for a while:
Modular Teal campers and shelters hit the market - Images
I pretty much hate excess inventory of equipment and already own an 18ft car trailer. I can put a modular Teal Camper on the front and still have room for toys on the back.
So, if you already have a utility trailer, or need one, this is a good alternative.
This design, by the same folks, fits in your Tacoma (page through the photos)
http://www.gizmag.com/firefly-mini-camper/29537/pictures#4