         // do not automatically sync the mesh to the physics body
          chassis.body.skipUpdate = true

          this.vehicle.setCoordinateSystem(0, 1, 2)
          physicsWorld.addAction(this.vehicle)

          const FRONT_LEFT = 0
          const FRONT_RIGHT = 1
          const BACK_LEFT = 2
          const BACK_RIGHT = 3

          const wheelAxisPositionBack = -1.3
          const wheelRadiusBack = 0.4
          const wheelHalfTrackBack = 1.1
          const wheelAxisHeightBack = 0

          con