function RaycastVehicle(options){

    /**
     * @property {Body} chassisBody
     */
    this.chassisBody = options.chassisBody;

    /**
     * An array of WheelInfo objects.
     * @property {array} wheelInfos
     */
    this.wheelInfos = [];

    /**
     * Will be set to true if the car is sliding.
     * @property {boolean} sliding
     */
    this.sliding = false;

    /**
     * @property {World} world
     */
    this.world = null;

    /**
     * Index of the right axis, 0=x, 1=y, 2=z
     * @property {integer} indexRightAxis
     * @default 1
     */
    this.indexRightAxis = typeof(options.indexRightAxis) !== 'undefined' ? options.indexRightAxis : 1;

    /**
     * Index of the forward axis, 0=x, 1=y, 2=z
     * @property {integer} indexForwardAxis
     * @default 0
     */
    this.indexForwardAxis = typeof(options.indexForwardAxis) !== 'undefined' ? options.indexForwardAxis : 0;

    /**
     * Index of the up axis, 0=x, 1=y, 2=z
     * @property {integer} indexUpAxis
     * @default 2
     */
    this.indexUpAxis = typeof(options.indexUpAxis) !== 'undefined' ? options.indexUpAxis : 2;
}
Vehicle helper class that casts rays from the wheel positions towards the ground and applies forces.
@class RaycastVehicle
@constructor
@param {object} [options]
@param {Body} [options.chassisBody] The car chassis body.
@param {integer} [options.indexRightAxis] Axis to use for right. x=0, y=1, z=2
@param {integer} [options.indexLeftAxis]
@param {integer} [options.indexUpAxis]