My son has bike commuted home three times now from his Thursday volunteer job. I've been giving him a ride to the place because it is still dark and he doesn't have any lights.
I had a decent little tailwind helping me home last night. I was also motivated to get home quickly because I had to take a daughter to dance practice. I averaged 18.1mph.
And I got to fight against that same wind this morning. Traffic was light though and I didn't have to stop at the couple of stop signs I usually have a short wait at. Quiet day at the office too as probably more than half are off for the holiday.