Yes, you can bind mouse to any key. What's more, you can bind mouse X as left/right and mouse Y as throttle/brake, allowing you to drive with mouse only.
I am trying get the mouse steering to work but no luck. I have tried binding and unbinding keys several times. I have checked the mouse on cps test and it works, so mouse is configured correctly... Can anyone give me exact steps to bind keys to mouse button left button and right button.