We got an email today from the Golden Triangle Business Improvement District announcing a little lunchtime commuter fair for tomorrow. It’s a fairly benign event, but one little detail jumped out at us: Workers and visitors in downtown DC’s central business district can navigate Metro’s online trip planner, pick up bus schedules, register their bikes, get information on car sharing, and learn about MARC, VRE and commuter buses during a lunchtime commuter fair at Farragut…