Hover Conversion Systems Now Available at ModBargains!ModBargains.com's Blog Any car, any conversion. Originally developed by Physicist and Inventor Dr. Brown in the 1930′s, this technology is finally ready for the prime time. Thanks in part to design plans for a complex anti-gravity system created by Felix Wankel, Donald Fullilove then used these technical papers to perfect his hover technology's antigravity emitter into a unit small enough to fit into the average wheel hub! Yep, we've got it here. Check out the blog post to check out the tech specs on the device and more photos of our conversion systems in action!