Road America!!

While the actual project lap time is way off, for the most part this matches some real F1000 data at this track - surprisingly well considering I'm taking blind guesses at most of the car parameters. There are a few reasons for the time being off, but I'm not too worried about the absolute values as much as the relative change. Still have plenty to tweak for drag, downforce, and tire grip... but this is a pretty promising result.

Even in its rough state, I played a bit with it over 3 sim runs.

1. Baseline
2. Base lateral grip + 5%, longitudinal grip -5%
3. Base lateral grip -5%, longitudinal grip +5%

Not going to give away which did what... but one of them results in about 1.2% better lap time compared to the base, the other is 1.3% slower. On a 2+ minute lap at Road America, I'll let you figure out what time differential that is. Of course since this model has no combined mode operation, it's tough to say if it's directionally correct.