Okay, please explain how Delta can call me at 9:30 last night, tell me my flight is cancelled because of a mechanical error. I'm in Atlanta, the Delta hub, and they don't have any extra planes lying around??? I mean when a greyhound breaks down, there's spare buses reasonably available. So to shorten the rant, had to take a later flight which means I get to work later which means I leave later which means it's pitch black outside!!