Thanks severdhed.
Space - I am going to mount the tv on a low profile wall TV mount from monoprice (18 bucks). I am going to build a bezel around the TV that looks similar to the mount that ITS has for $300.
I am going to use wood and hinges to simulate the bottom section and regular PVC pipe (sprayed black) to hide the HDMI wire up to the bezel.
This way I can wheel the cart into position - lock the front casters in place - then close the 2 hinged angled mount base pieces and secure them into place with screws into the cab. For all intents and purposes it will look just like the reference picture but instead of metal - my faux mount will be made up mostly of 1/2" mdf.
Hopefully that give you a good idea of my plan but fire away with questions if you have any.