An electric ultralight developer brought some hopeful notes to the Sustainable Aviation Symposium audience at the University of California Berkeley. Gabriel DeVault is the powertrain development specialist for ZeroAvia, bringing hydrogen power to regional air commuting. He does a lot of commuting in his own electric aircraft, showing that one doesn’t need huge investments in aircraft and infrastructure to enjoy green flight. The Paul MacCready Honorary Lecture: Doing More with Less, Right Now! An Aerospace Engineer and EV systems architect, Gabriel was a founding member of Zero Motorcycles, running R&D for the world’s largest and most successful electric motorcycle company. He now works for ZeroAvia, a firm in Hollister, California working with a hydrogen-powered electric Piper Malibu as the first step toward developing clean aerial commuters. He has worked for JOBY Aviation and designed the HEIST (Hybrid-Electric Integrated Systems Testbed), a Peterbuilt semi pulling a rolling wind tunnel with the high-mounted X-57 Maxwell wing and power system helping pull things …