See, I think that the Sidewinder genuinely looked good, for the time. Make it a bit more square and the front end could easily fit into modern designs aesthetics.
The LM-002 has always been my favorite offroad truck. It was designed as a military vehicle, and I feel it looks better in a camo livery than painted for the road. I feel the same about H1 Hummers too.
That Bizzarini is something nasty though. Probably one of their uglier designs, but I think the Bizzarrini Kjara takes the cake for ugliest in their catalog:
