VIDEO: 225 mpg DIY diesel hybrid on the road, kit version coming

Robert Q. Riley has finished designing and building his XR3 diesel hybrid prototype and now says, "Its your turn!". Yes, with a few simple tools and plans purchased from Mr. Riley, you too can (eventually) cruise the highways in your very own XR3. Engineered to travel 40 miles with lithium ion batteries powering the back wheel before switching on the Kubota diesel engine that power the fronts, the XR3 is said by its maker to get 225 mpg. The beauty of a DIY project like this is that you can do a lot of tweaking. That diesel motor could just as easily be made to run on WVO or some other biofuel. Of course, you could forgo the combustion engine (and tractor sound) altogether and add more batteries. Likewise, you can save a big chunk of the initial cost and only install the diesel.

If the thought of doing all that fiberglass work and metal fabrication seems a little daunting for your mechanical skill level, we have good news for you. During a recent interview on EVcast, the designer/engineer let slip that RQR Enterprises is now working with a kit car company to supply the some of the more difficult bits to save you time and a lot of swearing effort. Of course, you'll still have to add lots of parts yourself but if it came completely assembled you'd miss out on that extra bit of pride that comes from completing a project of this type. Mr. Riley estimates it may cost upwards of $25,000 to build the whole kit and kaboodle on your own. Hit the jump for video of the XR3 on the streets.