Fontana is a 2 mile banked oval. Not sure if they have an infield road course (like Michigan).
Wow. OK then. If they only got up to 90 average on a 14 degree 2 mile banked oval, that is really weak.
I have done numerous easy laps around Atlanta motor Speedway above 150 MPH. I didn’t go any faster ‘cuz the rev limiter stopped me.
But the track does have an infield cycle course. Pretty tight too.
http://www.nasaproracing.com/socal/fontana_sctrackmap.gif