Mike has been your usual Uber driver for the past few weeks, always greeted you by name, and knew your favorite spots. But recently, his behavior has been creeping you out. His friendly chats are oddly generic, as though scripted. He seems to remember every detail about your previous trips but fails to recall basic things about himself. Just yesterday, you caught him staring into space while you talked, only to snap out of it and ask if you had said something important.