This scatter plot visualizes automobile data from the UCI Machine Learning Repository’s Auto MPG dataset, showing horsepower versus weight for individual car models. Each point is colored by the car’s origin using d3.scaleOrdinal with the schemeSpectral palette. The visualization includes an interactive color legend that filters the displayed data points; clicking a legend category dims non-matching points. The implementation uses d3.scaleLinear axes, d3.axisBottom and d3.axisLeft for gridlines and labels, and d3.select to manage SVG elements and event handling.