Ran 100 octane for the first time. Wow

Back in the '80's, driving back from the Keys near the Everglades I was on "E" I noticed a pump with 100 octane, people used it in the air boats, I asked the guy if people ever used it in cars...so I filled up my '64 Fury and cruised at 120 across Alligator Alley. Maybe it was my imagination but it seemed like the car was on steroids. It was a rush, I'll always remember that day.