This example displays a scatter plot of auto-mpg data, mapping horsepower against miles per gallon with circles colored by origin and sized by weight. Tooltips reveal vehicle name and horsepower on hover. Built with the Vega-Lite API, it configures the visualization programmatically, registers Vega and Vega-Lite for rendering as SVG, and loads CSV data via D3’s `csv` function from the UCI Auto MPG dataset.