The Tri-Magnum is a three wheeler

Three wheeler

A three wheeler is a vehicle with three wheels, either "human or people-powered vehicles" or motorized vehicles in the form of a motorcycle, All terrain vehicle or automobile. Other names for three-wheelers include Trikes, Tricars and Cyclecars...

 DIY project designed by Robert Q. Riley. The drivetrain is a high-CC motorcycle rear end mated to a simple steel frame which in turn mates to a VW beetle front suspension. A simple body of wood, urethane foam, and fiberglass is constructed. The vehicle's plans are the best sellers at Robert Q. Riley's site. The plans debued in the February 1983 issue of Mechanix Illustrated

Mechanix Illustrated

Mechanix Illustrated was an American magazine founded in the first half of the 20th century to compete against the older Popular Science and Popular Mechanics...

 magazine but are now available for purchase from the designers website. Some states recognize the Tri-Magnum as a motorcycle, some as a car, and others as a Specially Constructed Vehicle. To comply with state laws some people have added a single motorcycle

Motorcycle

A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions.Motorcycles are one of the most...

head light in addition to the two regular car headlights.