     id = e.getZone().getId()
     o = @currentRides[e.getZone().getId()]
     @userEngine.hide(o.user)
-    delete @currentRides[id]+    delete @currentRides[id]
+
+  onGameOver: (e) ->
+    alert('game over')
+    @rideEngine.stop()
    @scoreManager.setBonusTip CONFIG.bonusTip
    @scoreManager.setTipSpeedRatio CONFIG.tipSpeedRatio

  onStart: () ->
    @grid = new Grid('.js-map', 200, 10)
    @grid.render()


    @_initCar()
    @_initRideEngine()
    @_initScoreManager()

    @userEngine = new UserEngine('.js-user-list', '.js-user-card')

