11: GMC Sprint
Even more confusing than the El Camino was the Sprint, because at that time, GMC had never sold a passenger car. In fact, the brand has never sold a passenger car other than the Sprint. The Sprint didn’t have differences from the Chevy El Camino, other than the grill design and some badging. Drivers weren’t too persuaded by the cloned car, as the El Camino still remained the sales leader (via Car Gurus).
Today, the Sprint has become a novelty item because of the GMC badging and the fact that the El Camino is rising in price. You could ordinarily find a Sprint for far less than the El Camino, but that will change soon. The rarity of the Sprint and the fact that it has GMC badging will continue to spike the price up.