I've heard of that t-rex before. its a small company who specializes in 6x56 trucks for whatever use. My guess is somene bought one and posted about it and their adventures on that page you found.
I don't like "trialer queens" either. I see a lot of the "survivalist" types who have some bug out/survival vehicle sitting at home but if something happens and they are at work and can't can't get to their survival vehicle then its just wasted. I like having my daily driver my survival vehicle. Sure its a compromise as I'm not going to be able to drive a 6x6 or rock crawler or military vehicle to and from work but I'm stuck in a front wheel drive minicar either. I went with a regular pickup truck with extended cab since I have a family and cap on the bed for my supplies. I get decent gas milage (around 20mpg) and still have 4 wheel drive and plently of supplies on board. From a BOB and FAK under the front seats to tools and gear under the back seat to larger capming supplies under the cap (the cap its self can be used as shelter as well) I'm still prepared while I'm at work.