Zack Nelson of the JerryRigEverything YouTube channel is the DIY electronics repair guy, but he's also got inventing chops. And now, manufacturing chops. Together with his wife, Cambry, Nelson designed and built an off-road wheelchair/bicycle hybrid (Cambry is a wheelchair user)--and they've figured out how to produce them for less than half the price of other off-road wheelchairs.

Take a look at what they're calling the Not-a-Wheelchair:

Here they show you what it can do off-road (and just as importantly, what it can't do):

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In addition to the cost savings, I love that they've designed it with maintenance and serviceability in mind by using off-the-shelf bike parts. And as they stated in the video, this is no Kickstarter announcement; they're ready to go into production, and you can place orders here for delivery as early as September.