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

    "background":
    { "class":     "ModelBackground",
      "models":    ["street1", "street2"],
      "views":     ["street1", "street2"],
      "direction": "horizontal",
      "vx":       -300,
      "model":
      { "class": "ModelBackgroundElement",
        "x":        0,
        "y":        0,
        "width":  806,
        "height": 400,
        "zLayer":   0,
        "overlap":  4
      }
    }
  },

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