This bubble chart shows the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle represents a make, positioned by its horsepower and torque values, with bubble size scaling to highway MPG and color distinguishing makes. Built with D3 v7, the SVG visualization includes interactive tooltips on hover and legends for both bubble size and color categories. Data comes from the bundled bubblechart.csv file, with linear scales mapping the three continuous variables.