In Version 0.14 there was a towbed for the d-series in "vehicles/common/pickup" and its one of the dae files, It was scraped I think because it was a wrecker bed which whould need a rope which would be hard to make back then. It had textures at some point but you can't find any in 0.14 tho in the pickups common directory in one of the material files you could find a material called "towbed".
no? there is a mod for it D-Series: https://www.beamng.com/resources/d-series-tow-truck-up-fit.18247/ T-Series: https://www.beamng.com/resources/t-series-tow-truck-up-fit.20113/
I actually changed my game version to 0.14 (through steam), and got the bed back. --- Post updated --- oh and as per request of the people, I got the bed for y'all
FOR ANYONE THAT WANTS TO MAKE THIS A MOD: it fits best on the long bed frame, proving that the devs were planning to add a long bed before/during 0.14. also are these half doors even in game?