I've participated and done fairly well in alot of sports, including motorsports. Raced cars on road. Raced motorcycles off and on road. The one sport that used everything all the time was motorcycle roadracing. Compared to automobile racing it was 10 times as hard. The difference in the 2 being on a bike, you aren't strapped in to a seat, holding you in place so you can control the vehicle. You are hanging on to the bars, turning the bike, right hand doing the gas and the front brake. Left hand hanging on turning and doing the clutch. One foot on the pegs and shifting, the other rear brakes. You don't really sit down, you squeeze with your knees, transitioning from one side of the bike to the other as you hang off around corners. Even the movement of your head changes things, sometimes it seems just moving your eyeballs effects the bike in a turn. One mistake and your down, no cage to protect you. The likelyhood of you sliding and then coming out of it wheels spinning throwing dirt up behind you as you re-enter the track, slim to none.
One of the greatest roadracers of our time, Valentino Rossi from Italy, tested with Ferrari in a Formula 1 car and had lap times that would have qualified him to enter a race with them. He did it to get a taste of what he might like to try in the future. I do not recall the reverse ever happening, re: A Formula 1 champion hopping on a bike and riding it fast enough to qualify.
Just my .02 !