Martine Rothblatt, CEO of the biotechnology company United Therapeutics, is a launch customer for Beta Technologies' Alia eVTOL. She's also an accomplished pilot who recently joined Beta founder Kyle Clark for a test flight in Alia in airplane mode. "You're not fighting a machine through the air," Rothblatt said in describing the experience. "Instead, you're almost like surfing the air. . . . Can life get any better than this?"