Joby Aviation made its debut Wednesday as a publicly trade company on the New York Stock Exchange surging over 25% after opening at a price of $10.62. Joby is currently promising air taxi service for the public by 2024, an ambitious plan for its electric vertical-take-off and landing vehicles, known as eVTOL. What makes Joby’s air taxis better than traditional helicopters? They’re electric and they’re quieter. Otherwise, they accomplish the exact same thing as a helicopter that might carry four passengers and one pilot. How will Joby turn that into a viable business? Presumably, by targeting the wealthy with the promise of fast, TSA-free trips of 150 miles or less.