Aggressive driving -- lead-footed acceleration, speeding, excessive braking -- can slash highway mileage by 33 percent, according to government estimates. Honda's Insight hybrid, arriving in April, softens the effects of wasteful driving and tells you when you're indulging in bad habits. Powered by a 1.3-liter, 88-horsepower gas engine and a 13-horsepower electric motor, the car averaged 38 miles per gallon even when I was ignoring its warnings. Mileage shot up to the low 50s when I engaged the car's three gas-saving features, detailed on the next page.
See Mike Spinelli's video review of the 2010 Honda Insight:single page
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.