This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for various car makes from a CSV file. The x-axis shows horsepower and the y-axis shows torque, while bubble size encodes highway MPG and color distinguishes car makes. Built with D3 v7, the visualization uses `d3.scaleLinear`, `d3.scaleOrdinal`, and `d3.axisBottom`/`d3.axisLeft` for the axes, and includes interactive tooltips on mouseover. A legend displays the MPG range using scaled circles.