3 ms·

Will these be gas powered? I hope not, but I don't see any way to get the required energy density. Flying lawnmowers here we come.

• rottyguy 13y ago
  electric. youtube: http://www.youtube.com/watch?v=98BIu9dpwHU http://www.youtube.com/watch?v=98BIu9dpwHU
  • codex 13y ago
    That sounds quite loud. Are you sure it's not gas?
    • chaz 13y ago
      In the 60 Minutes interview said it's electric.