Even better than a 200mph Bentley Continental is a convertible Continental. The 552hp W12 engine hits 60 mph in just 4.8 seconds. The only drawback: The drop-top model maxes out at a mere 195 mph. $190,000;
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.