Joby Aviation (JOBY -6.92%) reached a historic milestone in its effort to bring "flying taxis" to the masses, and investors responded by sending the stock to higher altitudes. Joby shares soared 34.9% in June, according to data provided by S&P Global Market Intelligence, after the company's aircraft took to the skies over Dubai ahead of a commercial rollout. From potential to proof Joby is among a handful of companies racing to bring an electric vertical-takeoff-and-landing (eVTOL) aircraft to market. eVTOL ...