I believe it was on Archive of Our Own but I cannot find it. It had to do with Clint deciding to leave but he not telling anyone. He takes some spare docs and a motorcycle, leaving everything else behind. He stops at a either diner/service station and finds a fellow biker that stops next to him to be Steve who asks if he's being watched/followed. Tony is above as Iron Man, and Thor + Bruce are in the diner. He then has a talk with Coulson and Natasha.
If this helps I remember Thor wants to try out a nearby motel's magic fingers.
Thanks in advance!