It’s like hover craft, sure they work, but at what cost? Bicycles, now there’s a design one can roll with. There was an HPV, The Gossamer Alabatross, crossed the English Channel in '79. Is anybody riding them now? Do you see similar HPVs anywhere now? No!
It’s like hover craft, sure they work, but at what cost? Bicycles, now there’s a design one can roll with. There was an HPV, The Gossamer Alabatross, crossed the English Channel in '79. Is anybody riding them now? Do you see similar HPVs anywhere now? No!
That’s because you can get vaccinated against HPV.
Ah, yes, I see, allow me to disambiguate: Human Powered Vehicle