Fred Flintstone would love this truck. A U.S. Army 1990 Freightliner Unimog FLU419 Small Emplacement Excavator up for auction on Bring A Trailer is the closest you can get to driving a dinosaur.

The Mercedes-Benz Unimog, the superhero villain of the off-road world that's just waiting to make the jump to Transformer, has been completely upgraded for its new generation.There are ten models ...