Car game help: Moving forward relative to the direction changes.

Hey,

Just wondering how I can determine what coordinates my car needs to when I press up on my keyboard relative to the directions the car steers to.

Basically, when I steering the car I want it to still go forward after I've steered.

Here's the function I have prepared already:

public function actions(event:Event):void {



if (upKeyDown) {








}



if (rightKeyDown) {




this.rotation+=steering;



}



if (leftKeyDown) {




this.rotation-=steering;



}


}