https://gamesartist.co.uk/car-trailer/
Environment Artist Simon Kleitsch has built this impressive car trailer he found not far from home, in this article he talks about, goals, software, ref, blockout, complete modelling workflow, tarp cloth, UVs, baking, texturing, masks, rust, rendering & lighting.
https://www.artstation.com/sicro
https://www.artstation.com/artwork/KOwbGW