As the title says, is there a way to map the racing line to a button or on the keyboard so I can switch it on and off without leaving the car? I like to use the racing line to learn new tracks a little quicker, but once I start gaining pace I want it off without having to pit and lose my momentum. This would be especially useful online where i'm hitting more unknown tracks and often don't have time for a full practice session.
This is from the RC introducing the new online experience: Added key assignment for toggling Driving line aid in the game. Aren't we talking about this? I can't say if it works, I just remember reading it there.
Well, it IS a new feature, and even @Coutie missed the introduction. So don't get too down on yourself! The most use I can think of the line is in the garage areas, some tracks have really funky pathways to reach the pitlane.