I was trying to use Fenix 7 during a track race day and found a few issues:
1. The motorsport activity provided by Garmin Connect IQ app would be perfect, but oddly, Fenix 7 is not listed a as compatible device - (Fenix 6 generation is).
2. The alternative is to create new activity ("other"), with autolap by position, highest resolution GPS and lap time and last laptime data fields (gap to best would be great but I have no idea if it is doable at all). It does require changing activity type to motorsport in Garmin Connect afterwards.
3. It also requires pressing start while crossing the start/finish line - once, but still potentially tricky thing in the heat of race driving. Is there any way to create a segment that starts and ends in the same place?
4. Garmin connect does not allow for shortening the activity, which is crazy - slow cruise back to pits, false splits in the depo zone, forgotten stop - they all mess up the readings.