An Australian chap named Chris Malloy has built a hoverbike from motorbike parts, and he claims it can fly at 173 mph at an altitude of 10,000 feet.
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There isn’t much in the way of safety features with the prototype, but Malloy plans to add a pair of explosive parachutes, or require riders to wear a ‘chute, and
cover the props with a mesh to prevent limbs from being lopped off. Malloy also hopes to implement gyroscopic controls with on-board overrides to stop the craft from tipping over.
http://www.wired.com/autopia/2011/06/die-smiling-on-this-hoverbike/