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Electric flight only makes sense for short trips (my guess is ~100 miles or less). Those distances are usually covered by ground transport, so the only reason to fly electric then would be to avoid rush hour congestion.
Mostly I think this will be a status symbol for the wealthy.
Besides all that, we have had efficient VTOL flight for decades; it's called a helicopter. There is nothing special about electric multi-rotors that make them better suited to autonomous flying compared to a helicopter. The same gyros, route finding, and sensors are used for both.
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