Hey, I've found something that I can call an "easteregg" in this game. I was looking for a button with which I can turn the lights on/off (in previous parts it was the F button) and accidently I found out that number buttons can trigger some actions:
1 - engine overheat effect
3 - nitro distance pop-up
4 - Wrong Way pop-up
5 - time check pop-up
6 - turn warning
Maybe they aren't very useful on they own but it's still interesting that they exist.
And btw you can't turn the lights on/off with any button. They turn on only while reversing and in dark levels (Xform, can you fix it)?