A two-door roadster that turns into a camper. Diminutive bubbles of glass atop four wheels. Every kind of weird door you can think of (and the gull-wing is just the start). This collection of odd, beautiful, impractical, and lustworthy concept cars from Toyota, Honda, Nissan, and more stretches back a half-century.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.