Clarification : You have x cars that go on x amount of tracks, then find the mean, or average, of all the fitness of those tracks.
1. What if one car excelled in tracks that are similar, like the hills and the peak, then lagging behind on other tracks like the raceway and the gap?
It would be equal to an all-around car.
Example: Cheap Car, 2, 2, 0, 0. All Around Car, 1,1,1,1. Cheap Car = All Around Car.
2. Rather than a limit of the distance of the track, why not limit time?
A flowing fountain of youth is worthless, as it represents your life, putting quantity over quality. Maybe that's why there's no such thing?