Bell is to collaborate with France’s Safran on development of a hybrid-electric propulsion system for its electric vertical-takeoff-and-landing (eVTOL) on-demand air mobility concept. The teaming was announced by Scott Drennan, Bell’s director of innovation, at the Future of Transportation World Conference in Cologne on Tuesday. The company is partnered with Uber to develop a prototype of the Bell Air Taxi, but also is looking at other markets. “We are going to start off ...