The point isn't, "oh, you should drive clean so you don't get disqualified."
The point is that with the way the disqualification system works, you're much more likely to get disqualified by a tiny mistake while driving cleanly than you are to be disqualified by intentionally shoving the AI cars around. The game doesn't just encourage you to "cheat" by making it possible to bounce off the AI cars; it discourages you from doing it "right" by making it extra likely that you'll fail if you try to drive cleanly.
That car always does the same crazy swerve in the same place at the same time, so you need to either make sure you get through quickly so he can't hit you, or wait until after that corner to pass. You wouldn't be "getting in his way" if he didn't insist on blindly making the exact same mistake every single time you try the challenge. It's not human error.
The point is that with the way the disqualification system works, you're much more likely to get disqualified by a tiny mistake while driving cleanly than you are to be disqualified by intentionally shoving the AI cars around. The game doesn't just encourage you to "cheat" by making it possible to bounce off the AI cars; it discourages you from doing it "right" by making it extra likely that you'll fail if you try to drive cleanly.
Try the test with the Lamborghini on Grand Valley. There's a white Diablo/Murcielago (forget which one it is) that spends much of its time halfway through the first lap wildly swerving and struggling to maintain control. If you're in the wrong place after passing it, it'll slam right into your rear fender; if it doesn't disqualify you right then (and thanks to the inconsistency talked about in this thread, it doesn't always), it stands a good chance of knocking you off the track.I usually hate to read stuff like the above quote, because when you go check the replay it is more than likely you're the one at fault and not the AI. Any time I was disqualified, it was because of me making a move at pretty precarious situations in driving. Before you start blaming the AI, watch a replay of your disqualification and see that it was probably 9 out of 10 times your fault. The AI knows where and how to drive in pretty much every situation, trust me I have watched these guys pull some amazing avoid and take a new line because I took away the ideal line.
That car always does the same crazy swerve in the same place at the same time, so you need to either make sure you get through quickly so he can't hit you, or wait until after that corner to pass. You wouldn't be "getting in his way" if he didn't insist on blindly making the exact same mistake every single time you try the challenge. It's not human error.