I'll toss out a few hypothesis...

Might be COVID-19 calendar.

I believe Marc lives in Palo Alto so 15-20 minutes of commute on surface streets to a16z on Sand Hill Road. Commute could happen before scheduled items.

It could also be his commute happens during UP before meetings on the calendar start. He has FREE on many mornings before UP so UP can't directly mean wake up, that 30 minutes could be the commute.

It says thanksgiving holiday at the top, so that rules out the quarantine......unless this is future calendar haha.

Either they include commute in the calendar* or they don't commute at all. Not sure a VC needs to come to people, just make people come to you and deal with the East Coast via video.

* job of a very good assistant: know and estimate commute time to anywhere in the world and reschedule better than any staffing startup AI.

You can work in the back of a car while someone else drives you. Some cars are built to make this comfortable.