Heard later - it was his worst ride ever, and he wished we wouldnt've gone. He wasn't up for it this morning.
Now I'm thinking it was easy to take things calmly when I'd already committed to a long haul. I guess I could've turned back.

Rode bike with my son to school and work today. He was in no mood and both of us were late. It was harrumph from the beginning but I didn't make much of it, choosing to let his mood take him where it would and stay silent and, hopefully, helpful when I could. If I can't come up with something he can use, I am finding it better to ignore and play it cool. Being a daddy.