This scatter plot visualizes the relationship between horsepower and fuel efficiency (MPG) for 49 cars from the 1970s–1973, with each point colored by manufacturing origin (American, European, or Japanese). It uses d3.csv to load the dataset and d3.scaleLinear for axes, rendering circles via SVG that respond to mouseover events with animated radius expansion and a tooltip displaying car details. The visualization includes labeled axes and a legend for origin categories.