Jean Botti has had a remarkable career on two continents, culminating in his leadership of French company VoltAero, which offers its latest hybrid aircraft in three flavors. It’s all based on a modular design which shares a three-lifting-surface aerodynamic platform. As the company notes, “First to enter service will be the Cassio 330, with five seats and powered by the 330-kilowatt electric-hybrid propulsion system. VoltAero’s follow-on six-seat Cassio 480 will have an electric-hybrid propulsion power of 480 kilowatts, while the Cassio 600 is sized at a 12-seat capacity with electric-hybrid propulsion power of 600 kilowatts.” The 330 has a wingspan of 32 feet eight inches and a maximum takeoff weight of 4,255 pounds (1,930 kilograms). 480 and 600 models share a 40-foot, seven-inch span and longer fuselages to accommodate larger power trains, more passengers and cargo. This impressive array of planned aircraft stems from humble beginnings, a Colomban Cri-Cri (the world’s smallest twin-engine airplane designed by one of the engineers …