An anonymous reader writes: Terrafugia is at it again. The "flying car" company has unveiled plans to build a semi-autonomous, hybrid-electric, vertical-takeoff-and-landing vehicle for personal aviation. The new design, called TF-X, is in the works even as the company's first product, Transition, is still awaiting production because of technical and regulatory hurdles. Terrafugia's founder says the goal of TF-X, if it can get past the safety issues in both aviation and automotive industries, is to "open up personal aviation to all of humanity." But it will have a lot of competition from companies including AgustaWestland, Pipistrel, and the stealthy Zee.Aero, all of which are working on vertical-takeoff-and-landing vehicles for consumers.