Kyle Vogt, the serial entrepreneur who co-founded and led Cruise from a startup in a garage through its acquisition and ownership by General Motors, has resigned, according to an email sent to employees Sunday evening. In another email, also viewed by TechCrunch, GM Chair and CEO Mary Barra announced that Mo Elshenawy, who is executive vice president of engineering at Cruise, will serve as president and CTO for Cruise. Craig Glidden, a Cruise board member and GM’s EVP of legal and policy who was recently put in charge of as chief administrative officer at Cruise, will continue in that role. Jon McNeill, a member of GM’s board, has been appointed vice chairman of the Cruise board.