Scatterplot Pan & Zoom

{
  "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
  "data": {"url": "data/cars.json"},
  "selection": {
    "grid": {
      "type": "interval", "bind": "scales"
    }
  },
  "mark": "circle",
  "encoding": {
    "x": {
      "field": "Horsepower", "type": "quantitative",
      "scale": {"domain": [75, 150]}
    },
    "y": {
      "field": "Miles_per_Gallon", "type": "quantitative",
      "scale": {"domain": [20, 40]}
    },
    "size": {"field": "Cylinders", "type": "quantitative"}
  }
}