GM's Three-Wheeled Runabout (1966)
The 1966 book Automobiles of the Future features these images of General Motor's Runabout concept car. Besides having three wheels it also features a built-in shopping cart that slides out of the trunk:
Two views of the GM three-wheeled Runabout. This car of tomorrow is fitted with two shopping carts that make up the car's trunk area. The experimental design has been operated with all-electronic controls in proving ground tests.