Bob "Favorites"?

[[InsertGr8Name]]

Hello peoples. I've heard from multiple threads that the drivers have "favorites", i.e. cars or tracks that will increase their arrow rankings. I was just wondering if there was any way to tell, other then experimentation, like some calculator that a nerd put on the internet or something. I only ask because my bobs arrows went up from green to blue when he raced the tuner cup in my x1 (PLEASE TELL ME HE LIKES THE X1 )
Sooooooo Ya