Both of these electric air taxi pioneers have sold off hard recently, creating a potential entry point for patient investors.Flying cars have been a punchline for decades -- the technology that's always "just around the corner" but never arrives.That skepticism has created an opportunity. Electric vertical takeoff and landing (eVTOL) aircraft are no longer science fiction, and the two leading companies in this space have seen their stocks punished over the past month, despite making meaningful progress towa ...