This interactive scatter plot visualizes the relationship between vehicle weight, year of manufacture, and fuel efficiency (MPG) across different countries of origin, using data from the UCI Auto MPG dataset. The visualization is built with the Vega-Lite API, which compiles specifications to render SVG graphics. The code applies a custom configuration for axis styling and uses Vega Tooltip for interactive hover details. Data loading is handled by the d3.csv function, fetching from a remote Gist URL.