With the five-door, $60,125 A7, Audi hopes to drive the brand further upscale. Fittingly, Audi made much of the car’s high-end flourishes—the yacht-deck-inspired woodwork in the interior, the touchpad-based user-interface system that first appeared last year in the flagship A8. The A7 is big—long but sleek—and runs on a supercharged, all-aluminum 3.0-liter TFSI engine that makes 310 horsepower. That’s mated to an 8-speed tiptronic transmission.
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.