I have friends (that do track days more than autox) who use apps to record runs and then the video file is overlayed with data readouts, but his phone's gps only refreshes at 1 Hz (like most phones), so it can be a bit slow for autox.
I want to find a good data logging method though. Knowing what's happening with the car is important.
Out of curiosity, has anyone considered those attachments to their shocks to log shock movement throughout a course?
I day dream of those sometimes... even though I don't know what I would do with the data lol.