The bikes aren’t the limitation anymore, as elite bikes now only weigh about 5lbs or something like that. It’s the human being that is the limitation in how fast humans can go. We’re just not aerodynamic and we aren’t that strong.
What Matt Weaver started doing with the video camera system, and extensive laminar flow really just took the speed close to its limit. He and Sam Whittingham were battling it out years ago. Sam probably could have taken Matt’s bikes faster because the designs were that and good he was arguably a more powerful rider.