Electric airplanes are coming at us a mile a minute with claims that seem to defy the laws of physics and maybe even Ohm's Law. In this AVweb video, Paul Bertorelli takes a critical look at what most people in the industry consider to be a leading contender to own the urban air mobility market: the Joby S4. It's a markable design and appears surprisingly mature. But can it make it through FAA certification on Joby's claimed schedule? And will the imagined volume in the thousands ever materialize?