Thanks for the info my friend.I reckon the Tharg concept art from the confirmed leak is probably a bit more reliable for now. Or at least a better steer on their likely plans for the game.
The truck is fun, but doesn't look like something the current SRV bays could transport. More likely a location asset that's been dabbled with perhaps.
(FDev did dabble with concepts of larger player vehicles seemingly. You can see some snippets here from the 2016 digital art book. But again they don't seem to be hugely practical given the current bay size.)
Now I'm more excited about the Thargois!