I switched up my usual commute this morning and ditched my bike for the chance to try out Bridj, a Boston-based “pop-up bus transit” startup company that launched this week in Washington D.C. The company offers flexible shuttle routes that adapt based on the locations of who has booked a ride during a given period of time. Bridj so far is offering limited morning service between the greater Capitol Hill and Dupont Circle areas and currently runs at 20-minute intervals. Depending on who is using Bridj in your neighborhood on a particular day, your pickup location can be relocated to optimize efficiency while making sure that you never have to walk more than 10 minutes for your stop.