Chevrolet built the 1958 Impala Sport Coupe body and trim for exactly one model year before moving on, making genuine surviving examples like this Sierra Gold coupe rarer than more famous Bel Airs from neighboring years. Owner Marc Vernon has cared for this one since 2014, keeping the details intact that most 58s lost to hot-rodding or neglect. It is Chevrolet overlooked middle child, sandwiched between two more famous redesigns. Watch to see what a genuine one-year-only Chevy still looks like today.