1964 Pontiac Banshee concept, In 1964 Pontiac unveiled their newest concept car, which they dubbed the Banshee. During its development it was called the XP-833 project. This car was a small two-seater with a long, sweeping hood and a short rear deck. Several different versions were constructed, but only two drivable prototypes were ever built. One was a silver hard-top with a straight six engine and the other is a white convertible with a V-8.