They only scenes I can remember where he was shown ‘riding’ a motorcycle, a late 40’s era Triumph, was when he was with Pinky Tuscadero, a female version of the Fonz, and another scene where he was coming to a short stop in front of the other guys standing around talking.
The first motorcycle he was shown with was a late 40’s Harley.
Otherwise, he was shown just sitting on the motorcycle............
But could Peter ride? And why wasn’t the bicycle invented far sooner?