Here's some inspiration for all those backyard mechanics out there.

Robert Q. Riley Enterprises, a company based in Arizona, has just released construction plans for its do-it-yourself, two-passenger, XR3 plug-in hybrid. This is a vehicle that's capable of up to 225 miles per gallon, has a top speed of 80 mph and will accelerate like a normal small car.

What you get for the USD$200 price is an instructional package for a modular, three-wheeled sportscar. This includes printed drawings, electronic 3D virtual models, computer files that enable vendors to make parts plus a DVD that outlines the building of the car.

So, anyone game here? Full story here and here.