ok. i give u the pseudocode, maybe u can make the c-script urself. (cause am using lite-c)
in the car action, u need to check for the events e.g.
action car()
{
if(rotate)
play skidding sound
if(speed <10)
play sound at low volume
if(speed <20 && speed > 10)
play at an increasing volume
...
...
}
this is the logic. u can convert it to c-script. let me know if there is any issues.