Peel P50

Source: https://en.wikipedia.org/wiki/Peel_P50

Manufactured between 1962-1965 by Peel Engineering Company on the Isle of Man, this is arguably the most bizarre microcar in automotive history. The car was declared by the Guinness record as the world's smallest production car.

Peel Engineering Company was a manufacturing company based in Peel village located on the Isle of Man's west coast. The company primarily manufactures fibreglass boats and fairings for motorcycles.

Source: http://www.cargurus.com/Cars/1962-Peel-P50-Pictures-c19982#pictureId:13943974

This car can only fit 1 person and 1 shopping bag, 1 headlight, has only 1 door slung out on the left side of the car and most importantly, no reverse gear. You heard that right, NO reverse gear. Peel decided to attach a handle bar right behind the car (as shown in above picture) meaning you have to physically walk behind the car and pull the handle bar to get you out of parking bay for instance. Why Peel decided to omit reverse gear is unfathomable (cost cutting???). Drive is transferred to the single rear wheel by a diminutive 49cc engine. 

If there is one great thing about this car (though not necessarily great to everyone) is this car can be driven literally in a tight confine, like your office for instance. No kidding. This car is so small that it can fit nicely, and drive nicely in your office. Check out the TopGear video below and you will see the point. 

Video Source: Top Gear