I believe bike speed and acceleration is already largely determined by your strength, so any drugs that boost strength will likewise boost bike speed.
That said, even with 14 strength bicycle speed and acceleration is simply pathetic- it takes over a minute to reach 11-12 MPH where it maxes out. In real life I can go from stopped to 15+ in less than 30 seconds, and on a flat surface I can maintain over 30 MPH. And I definitely don’t have anywhere near what would be considered “14 strength”.
I think the bicycle was balanced around it being completely silent, but that is worth much less than it used to be. In the new days of dynamic spawn I think the bicycle deserves a serious boost to make it even worthy of consideration.
Ideally your speed on a bicycle should determined both by your strength and your current speed. That would make it strongly affected by stimulants.