This example visualizes the relationship between a car's country of origin and its horsepower using a scatter plot. Each point represents a car, with opacity applied to reveal overlapping data points, and a tooltip displays the car's name on hover. The visualization is built using the Vega-Lite API, which generates a specification rendered to SVG via Vega and Vega-Lite. It loads the Auto MPG dataset from the UCI Machine Learning Repository using `d3.csv`, and customizes axis styling and tooltip appearance through a configuration object.