Sun Tzu

I followed the link but still dont understand their market strength. What are they for? Transportation obviously, but to replace bikes, scooters, what? DOes anyone know if BIll Gates had anything to do with funding the design of these things?

I thought that pic Halx had in photochopping in the previous TFP was a joke.

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To confine our attention to terrestrial matters would be to limit the human spirit.- Stephen Hawking