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This interactive scatter plot displays auto-mpg data from the UCI Machine Learning Repository, plotting fuel efficiency (mpg) against horsepower. Each point represents a car model, colored by country of origin and sized by weight, with hover tooltips revealing the car name. Built with the Vega-Lite API, it uses D3.js for data loading via `d3.csv` and renders through Vega-Lite's specification. The visualization adapts to the browser window dimensions, using a customized axis and label style for improved readability.