I was truly certain that Satan was in possession of the AI during my efforts to win the Wilkes-Barre track!!!
Then I discovered that whole "tweaking" thing for my 4-wheeler.
BTW, I initially ran the "default" 4-wheeler (don\'t remember which one it was specifically,...just the one that displays when you first begin) all the way to the unlockable ATV 1000. As far at THAT ATV goes...WOW!!! Ya know how you can be racing a track and you witness one of the AI ATV\'s gettin air over Mars & your head? I mean, jeez, they can literally FLY...well, that\'s what the 1000 lets you do!!!
The ATV 1000 is terrific!!! Now, if you have not done it, kick it on the Waypoint tracks (and choose the long version -- versus short or medium). The Waypoint environments are simply amazing!!! Then kick it up a level and edit your own Waypoint tracks the way you see fit. Truly wicked game!!!