This scatter plot visualizes the relationship between fuel efficiency (mpg) and horsepower for cars, with each point’s color indicating the country of origin and its size reflecting vehicle weight. A tooltip reveals the car’s name on hover. The visualization is constructed programmatically using the Vega-Lite API, with a custom configuration for axis styling and tooltip formatting. Data is loaded from a CSV file via `d3.csv`, and the chart is rendered into an SVG using the Vega-Lite and Vega libraries, with interactivity enhanced by the Vega Tooltip handler.