There are some very remote places in the world where regular, reliable vehicle transportation is not available. So some adventurous souls are trying to develop a solar-powered-helium assisted flying machine to reach those places. The advantage would be consistent delivery of invaluable medical supplies, where no such service is currently available.
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The founding organization is trying to raise one million dollars to make the flying machines and train local pilots. At this point they are well short of their goal though and have only about fifty hours left in their campaign time bank.
The Solar Ship Foundation is managed by a Canadian charity.