I spent the better part of a year as a commuter earlier in my career – a fine, scripted melodrama of express train schedules and meeting planning to coincide with the need for transportation. My wife would drop me off for The 8:01 from Arlington, which made it downtown by 8:36 – the commuter’s dream. Miss that, though, and the 8:20 doesn’t arrive until 9:16, and the 9am call is missed. I thrive on flexibility and options – don’t we all? I want to leave when I want, or to spend the....