I was wondering where he was going, so I went to his public schedule at whitehouse.gov.
Maybe I didn't see the President, but instead saw the Bidens on their way to Guatemala. But normally, a trip like that starts with a helicopter ride to Andrews AF Base. Maybe the VP doesn't warrant a helicopter, but it seems like air travel to Andrews would be cheaper for the taxpayer than that huge entourage and all the cops to block the intersections all along the way. If you were going to Andrews from the White House in a car, you would take NY ave. though. It goes pretty much straight there.
Or maybe the President got his morning briefing earlier than they claimed and ran some secret errand before his 11:00 meeting back at the White House.
I always thought the VP motorcade was smaller than that and didn't have the ambulance.
But what do I know? It's not like they brief me. It's all a mystery to me. And not a very interesting one.