{ "model":
  { "stage":
    { "class": "ModelStage",
      "width":  800,
      "height": 400
    },

    "background":
    [ { "class":   "ModelBackgroundElement",
        "view":    "street1",
        "x":         0,
        "y":         0,
        "vx":     -100,
        "width":   806,
        "height":  400,
        "zLayer":    0,
        "overlap":   4
      },

      { "class":   "ModelBackgroundElement",
        "view":    "street2",
        "x":       802,
        "y":         0,
        "vx":     -100,
        "width":   806,
        "height":  400,
        "zLayer":    0,
        "overlap":   4
      }
    ]
  },

  "view":
  { "street1": {"class": "ViewBackgroundElement", "resource": "street1"},
    "street2": {"class": "ViewBackgroundElement", "resource": "street2"}
  }
}