Mark worked for NASA for 32 years before joining Uber to become the Engineering Director as co-founder for the Elevate initiative. At NASA he pioneered the development of Distributed Electric Propulsion, leading three rapid concept to flight demonstrator teams including the Greased Lightning UAV, LEAPTech mobile test truck rig, and the X-57 (which is the first manned X-plane in over 25 years). At Uber he’s responsible for fostering the collaborative ecosystem strategy to pursue Urban Air Mobility. He’s currently CEO of Whisper Aero which is developing the next generation of Distributed Electric Propulsion technology.