Yeah I think I know the one you speak of, I remember something about a women, bicycling really fast with the help of draft assistance on the salt flats. I am sure they get an adrenaline rush from it.
Well before biking ski mountains became popular and you could take the lift up, I rode down Paskapoo now renamed and a few other ski resorts in the Rocky Mountains this would have been 30+ years ago now. It was quite fun, much skill. I watch a few YT's on dumb fucks buying BSO's from Walmart and taking them to Whistler/Blackcomb and those bikes never survive. The dipshit even returned it and got a refund, selfish motherfucker. I have gone up to 60kph but on juice, no pedaling at all. Not the juice Lance was on either, talking electron juice Also I did not even do 60 for too long and I just assume that speed because that is what the speed limit was and I was right behind a SUV. I did not feel safe going that speed because one pothole and its not good, one rock, one 2x4, one nail, one bump. 60mph is 100kph and on a bicycle, bicycles were not meant for those speeds, those vibrations, those forces. It would not even be worth it to reinforce the welds, be better to just buy a motorcycle frame, and install the bicycle driving components. Using those cranks would require lots of space, a gear box would work. A nicely machined gear box, then you could even install an overdrive unit that can slip in once you get to certain speeds. Some vehicles have aftermarket overdrive units, they are quite costly.