Terrafugia’s Transition is a flying car. It’s an awkward, gangly beat, with wings that fold perpendicular to the ground like too-tall sails, and a wide, bubbly cockpit that seems out of place in the sky. It flies, and it drives, and now it has a waiver from the FAA that exempts it from some of the stricter requirements of being a light sport airplane, requirements hard to meet if it is...