Does anyone know if the 501 Diner in Chapel Hill is still in business? I drove by there this morning at about 9:00 and saw not a single car in the parking lot and what appeared to be a dark interior. I didn't see any signs on the windows and I didn't get out of the car to see if anyone was inside. I'm guessing they aren't closed on Mondays. It's a diner! Perhaps a vacation. Anyone know?