It utterly does not work. Go below 1.0, you can no longer reach all the way to the lock. It seems you didn't test it. Big facepalm.
Mouse sensitivity is one of the ESSENTIAL settings. It is absolutely necessary for mouse steering to be complete. All FPS games since 1993 has mouse sensitivity, probably exaggerating but DOOM and Quake have it, and there's lots clones of them, especially DOOM. Look at pro CSGO players, very low sens and large mousepads. Search YouTube for "mouse sensitivity" and there's lots videos.
You can change mouse DPI but not all mice have configurable DPI. I do not want to change desktop sensitivity for any game, else i'd have to switch between game sens and preferred desktop sens. Don't change Windows sensitivity, mouse will no longer be mapped 1-to-1 movement. If you set it higher (6/11 is default, 1:1), then pixels are skipped, vice versa when below default.
The other essential parts for mouse steering are: a thicc visible-at-all-times indicator with lines to help determining how far you're steering and some sort of centering help, be it non-linearity, deadzone or thresholds. About the LFS indicator... Why the center thing removed for when in car? I believe it will be extremely helpful. And it needs to be thicker and wider.