Photos: A century of helicopters

The truly adventurous out there, meanwhile, might want to try something more like the Airscooter II, which in some ways is a throwback to the earliest days of helicopter flight. With a 65-horsepower, four-stroke engine, it weighs about 300 pounds and can travel at about 55 knots. The company plans to show it off next month at the Wired NextFest in Los Angeles.

Photo by Airscooter