Anyone here ever seen one of these? https://www.rideapart.com/articles/274030/maserati-tipo-t2-motorcycle/
Doubtful even then, unless you're talking about momentary forward speed. Near the surface of the Earth, an object in free fall in a vacuum will accelerate at approximately 9.8 m/s2, independent of its mass. With air resistance acting on an object that has been dropped, the object will eventually reach a terminal velocity, which is around 53 m/s (195 km/h or 122 mph) for a human skydiver.
It'll be close. Weight doesn't matter, and wind resistance between a motorcycle and a human should be similar.
I don't know, but it's possible I guess if you get up where the air is really thin. Didn't that guy who did the Red Bull Stratosphere jump hit over 200mph? It'll still slow down the closer it gets to the surface.
What makes you think the drag coefficients between a motorcycle and a human are similar? While I don't think a free falling motorcycle is exactly aero efficient, I'm also not going to presume that it's anything like a human.