I've never been a motorcycle guy, but I had a college classmate whose goal in life was to buy a Vincent Black Shadow. They'd already been out of production for like 20 years by the mid/late 70s , but was supposed to have been the fastest production bike every made to that point. He was obsessed with getting one.
Odd character, went all the way through aero engineering school, only to take a very pedestrian engineering job for some outfit, in either Oregon or Idaho, that made pipes for the petroleum industry. Seemed like an odd place to live if you're a biker. Beautiful, but I'd think a short riding season.
To my knowledge he's never been in contact with any of us who graduated together, so I don't know if he ever got his Vincent.