Is the El Camino a car or a truck?
Quick Answer
The El Camino is a coupe utility, a car-based pickup. It is built on a passenger-car platform (full-size in 1959-1960, then the Chevelle A-body from 1964) with a pickup bed grafted on, so it drives like a car but hauls like a light truck. Chevrolet built it to answer the Ford Ranchero.
The El Camino sits between car and truck on purpose.
Car underneath
The 1959-1960 cars used the full-size Chevrolet body; from 1964 the El Camino rode the mid-size Chevelle A-body. That means car ride, car interior, and car engines, with an open bed out back.
Why buyers love it
You get muscle-car drivetrains (including the SS 396 and 454) with everyday usability. It registers and drives like a car, which is part of the appeal.