I had a jacket back then just like the “Pharaohs” (hoods) wore in the movie.
There was a guy in my school, I think he was a year older than me, who rode a Harley and wore a black leather jacket. They could have used him as a model for “Fonzie”. Black greasy hair and all.
He was not a bad guy but he sure didn’t have all the girls swarming him like in “Happy Days”. He was killed on his Harley. I think he hit some garbage cans.