This bubble chart shows the correlation between average horsepower, torque, and highway MPG across different car makes. Each circle’s position encodes horsepower on the x-axis and torque on the y-axis, while its radius and color represent highway MPG and car make, respectively. The visualization uses D3.js v7 with SVG rendering and includes interactive tooltips on mouseover, plus legends for both bubble size and categorical colors. Data is loaded from a CSV file, and the implementation uses `d3.scaleLinear`, `d3.scaleOrdinal`, `d3.interpolateTurbo`, and `d3.axisBottom`/`d3.axisLeft` for scales and axes.