This has been a frequent request but recently I was aware that it may not be as nice as people envision.
My friends and I have had a monthly GC contest where we ride a certain route or segment.
These rides must take place within a certain week to count for our contest.
Many of our PRs took place previously in a race and the drafting hugely affected our times.
A PR bot, riding out best segment will not be a reliable goal unless the ride environments are similar.
Every race is different.
Just a little thought into 1 common request that has not materialized.
I don’t think it is possible using time as the measuring tool.