Speedometer and tachometer decals

[NaN]

With the upcoming support for gauges in the ui, users most probably will want to have gauges with scale ticks and labels.

The issue is the range of speed and rpm limits we have with the cars in master.

Possible solution:
Let the game tell the gui what decal to use.
For speed at 40 kph/mph granularity: 120, 160, 200, 240, 280, 320, 360
For rpm at 1000rpm granularity (x1000): 5, 6, 7, 8, 9, 10, 11, ..., 20
This makes 7 speedometer textures (120.png, 160.png, ...) and at least 8 (skipping some between 11-20) tachometer textures to get all cars covered?

Alternative solution:
Tell the game what gauges are available to pick from and let it select the closest one? Technically more complex, but could get away with less textures.

Crazy idea:
Have a per car hud page, which would override the one provided by the gui skin. But we also support different gui skins (even if unused atm), how would that work then?

Any ideas, comments?