I was wrong. I left the office near 5. Caught the bus, which deposited me at the metro 6 minutes later.
Walked down the steps, caught the train 3 minutes after I hit the platform.
15 minutes later I was cooled my heels for 10 minutes waiting for the bus that would deposit me back at my car, which took an additional 9 minutes.
Then I got into my car, and things went straight to hell.
Because I was leaving much later than normal, I couldn't take I-66, which turns into HOV 2 or 3 commuter lanes at 4 p.m.
That also pushes a lot of traffic off 66 and onto the surface streets.
So, 49 minutes and 10 miles later, I finally walked in my front door.