, chassis, tire)

          // keys
          const keyEvent = (e, down) => {
            switch (e.code) {
              case 'KeyW':
                this.keys.w = down
                break
              case 'KeyA':
                this.keys.a = down
                break
              case 'KeyS':
                this.keys.s = down
                break
              case 'KeyD':
                this.keys.d = down
                break
              case 'Space':
                this.keys.space = down
 