Racing line optimal speed indicator

[logzero]

CrystalH: I have a feature idea. Coloring the racing line.
So red where you should brake, green for acceleration, yellow for nothing. Maybe it's possible to get that info from AI and apply to vertex colors ?
Example from commercial game here (since 1:40): https://www.youtube.com/watch?feature=pl...9xRQ#t=101

[dcoshea]

Example from commercial game here (since 1:40): https://www.youtube.com/watch?feature=pl...9xRQ#t=101

That link is broken, here is the correct link from the forums: https://www.youtube.com/watch?feature=player_detailpage&v=fUoIUv79xRQ#t=101 (it's from DiRT 3).