They’ve managed to attract funding from a number of established companies, including Hyundai, Toyota, Airbus, Boeing, Bell, and Uber. Analysts predict that the flying taxi market could grow to $150 billion in revenue by 2035.
Of course, serious obstacles remain before Wisk or any other company can launch a commercial service. The power-to-weight ratio is a huge challenge for electric flight. Energy density — the amount of energy stored in a given system — is the key metric, and today’s batteries don’t contain enough energy to get most planes off the ground. To weigh it out: jet fuel gives us about 43 times more energy than a battery that’s just as heavy.
There have been numerous demonstrations of battery-powered flight, but there are no electric aircraft in commercial operation anywhere in the world.