Back in 1980's, I ridden bicycle close to 45mph. It was rather scary. I was pedalling really hard on my sister's new 10 speed bike on a steep hill (I was on 10th gear). It was really fast and I decide to lock front brake before I cross the intersection. Her bike flipped me over and I flew and crashing and spinning on pavement until I stopped just 10 feet from interstection while her bike tumbled and landed on top of me. That hurts!!! I got scrape and bruises everywhere and walk home with her bike like an 80 years old man. She was pissed at me cuz her bike handlebar wrap had scrape on it and seat a bit ripped.
LOL, 30-35 mph on a bicycle going downhill feels LOT faster than driving in a car at 75 mph. It's scary because of braking issue.
I also rode a rental mountain bike in Colorado and went downhill with my friend. It was pretty fast and the brakes got red-hot once when we were at the bottom of the hill!
As for moped, I've attained 45mph by tweaking throttle easy. It was 1978 Batavus Regency HS. My moped was the fastest of moped groups because many mopeds have "governer" built in while mine don't. Group of 5 deaf moped riders were jealous cuz I was waaay ahead of them so I decide to let them ride mine and I ride theirs to keep them happy.
I can imagine...I'm still scared to drive a motorcycle even though I learned how to drive a moped once.
On Motorcycle, I've only done 0 to 75mph in 3 seconds on my brother's 1979 Honda 4 cylinders 750-4 Super Sport. It was rather scary beast I've ridden because I had to hold handlebar until my knuckle was white or else I will fly off.
Yea, not surprised because my childhood friend had a Honda CBR900 sport bike....SCARY! He was rushing past us on the side street at over 75 mph like no tomorrow!
Catty