We reported in the blog four years ago that Embry Riddle Aeronautical University not only displayed their eSpirit of St. Louis at AirVenture that year, but ran the motor for the crowd. The crowd included Federal Aviation Administrator Michael Huerta, who sat in the cockpit during the runup. The eSpirit of St. Louis A product of Embry-Riddle, eSpirit is finally making its presence on the taxiway known. Kelly Pratt, writing in the Embry Riddle Aeronautical News, reports, “After nearly four years of perseverance, the Eagle Flight Research Center (EFRC) team at Embry-Riddle is celebrating a milestone in its electric propulsion research: its Diamond HK-36 completed a successful taxi test exclusively on electrical power at the Daytona Beach International Airport.” Erik Lindbergh, grandson of Charles, has been a guiding factor in eSpirit’s development, and the airplane reflects his grandfather’s “notion of balance between aviation and the environment.” The quarter-mile on the taxiway may seem like a short trip, but student Sanay …