Originally Posted by
cooker
Are you predicting this will be developed or on it's way to development, aimed at supporting reduced car use, within 5 years?
Considering I haven't seen anything remotely resembling a low-rpm helicopter with giant, broad rotor blades (maybe even sails), I'm going to only predict prototype development. I will only cast my hopes into this wishing well if it is very quiet, safe, and efficient. If it closely resembles a dragonfly, that would be a plus but not a requirement.
Look at this thing. Someone actually designed and built this:
