The companies developing electric vertical takeoff-and-landing vehicles all promise that their aircraft will drastically slash travel times by flying above traffic. But to fulfill that promise, their take-off and landing sites – or vertiports – will have to be where passengers need them. WSJ’s George Downs explores their strategies and why it matters. Illustration: George Downs The startups and investors that have sent hopes soaring for “flying cars” could be in for a rough landing, in more ways than one. Hundreds of companies, new ones and legacy aviation players alike, are working on such vehicles—also called air taxis or eVTOLs (short for electric vertical take off and landing). Five such startups have gone public in the past 12 months. They are trying to shape a near future in which taking a flying cab is an economically viable alternative to taking a terrestrial one. The biggest stumbling block to that […]