Having played the game for a bit last night, one bit that i think could be improved is the Overtake button.
Currently you press it to activate & then press it again to turn it off. I find this quite cumbersome and think it would be better if there was option for it to only work when the button is held down. This stops it being accidently left on at the end of a straight and is more in keeping with how its usually used which is for a couple of seconds early in the straight.
I'm not sure how its used in real life, but i don't think it would hurt to add it in as an option