Manufacturers (USA & Canada)





Robert Q Riley Enterprises

Site provides plans for a huge range of vehicles - cars, vans, electric vehicles, three-wheelers and hovercraft.

These include the Tri-Magnum and Doran three-wheel sports cars, another trike the Trimuter, the Town Car hybrid electric auto, the Urba electric car, the UrbaCar and the golf-cart-battery-powered Urba Trike.

Also has news of the XR-3 Hybrid.

Vans include the Phoenix, Boonie Bug, Minihome and Budget Camper.

Plans are also available for their hovercraft, cycles, speedboats and even submarines, barbecues and a jacuzzi.

The site has a DIY gallery with pictures of owners' finished products.

Location: Phoenix, Arizona.

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