"I am sooo hip, listening to my Walkman and driving my new Datsun 120Y"
Back when a Datsun 120Y was new, there were no walkmans. This was back in the days of transistor radios and cassette players.
As for being 22, - about the same time as the 120Y came on the market- I was indeed 22. And had never owned/ridden a bike.
Gai, you are of course correct. I can recall when Walkman's first came on the market, and it is a while after 120Y's hit the market. I just liked the idea of people thinking a 120Y was a cool car.
Edit: Fixed missing quote tags