I saw a video about Michael Schumacher using 3 speedos, one that showed the current speed but also one that showed the slowest speed around a corner and one that showed the highest speed around a corner. I do glance at the speedo when exiting a corner to see if it was a good exit speed or not so would love the 3 speedo kind of setup that he had. But thinking Racechrono could do this maybe? I know there is a speed delta but this only compares to your best lap of the session. I'd rather something like manually put in an optimal speed maybe, or even just hold the slowest speed and highest speed for a second or two.
https://www.instagram.com/varietyauto_solutions/reel/DCtSmFpRDK3/ 
