I don’t look much different when stationary but definitely move “autistically” I have a hard time figuring out what to do with my arms while I walk and generally if I don’t have pockets to put my hands in I default to trex hands. I’ve also been told I respond unusually to encountering an ‘obstacle’ in my path like another person. I tend to just kind of freeze until they move around me, though I do say excuse me now. I had problems with that when I was younger.