This is a picture from the GM Heritage center.  Eventually we will start on the restoration of ours.  Ours is Chevrolet not a GMC as pictured.  These are very rare vehicles.  A Canopy express is a light-duty cargo van based on the chassis of a panel truck. Canopy express vehicles have open display areas behind the driver's seat commonly used for peddling vegetables and fruit, but also used for other kinds of deliveries that require easy access, such as newspapers and radio equipment. Canopy express trucks evolved as a more stylized version of standard  pickup trucks that contained open canopies installed over the pickup bed.  As the United States became more suburbanized after World War 2, sales of canopy express vehicles declined. GM offered the last of these in 1955.