Concept cars were once common sights at annual industry shows, and many concepts evolved into soon-familiar production vehicles. Others did not. Here’s a look at a half a dozen Chevrolet concepts that never made it to the showroom.

The 1979 Nomad II is particularly interesting, as it bears a striking resemblance to the Dodge Caravan which would arrive at Mopar dealerships four years later and kickstart the minivan revolution. #ACCC