This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for various car makes. Bubble size encodes highway MPG, while color distinguishes car brand. The visualization uses D3 v7 to render SVG circles, with a tooltip displaying the make on hover. It incorporates a legend for bubble size and color, using scales like `d3.scaleLinear` and `d3.scaleOrdinal`, and reads data from a CSV file.