This example displays a scatter plot of auto-mpg data, encoding horsepower, weight, and origin. A circle mark uses quantitative axes for mpg and horsepower, color by origin, and size by weight. It features a tooltip for vehicle names. Built with the Vega-Lite API, it renders an SVG chart using vega-lite-api, vega, vega-lite, and d3.csv, with custom styling via a config object. The data comes from the UCI Machine Learning Repository Auto MPG dataset, loaded asynchronously and displayed with interactive tooltips.