This interactive scatter plot visualizes the relationship between miles per gallon and horsepower for automobiles, with each point colored by origin and sized by horsepower. The visualization uses the Vega-Lite API in JavaScript to construct a circle mark with quantitative x and y encodings, along with color, size, and tooltip encodings. It loads data from a CSV file via `d3.csv` and renders as an SVG using the vega-lite-api library. Appearance is customized through a config file that adjusts axis and label styling for readability.