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by michaelt 3364 days ago

  The initial two-seat design uses battery packs, with a
  flight-time duration of only about 20 to 30 minutes. It 
  will be certified for sport flying, Zosel says, and he
  plans to sell the copters for about $340,000. He’s also
  working to develop a hybrid power system that would extend
  flight time to over one hour.
https://www.wired.com/2015/06/18-rotor-volocopter-like-flyin...