This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for various car makes. Circles are positioned by horsepower and torque on the x- and y-axes, with their radius scaled to highway MPG and color assigned via a categorical scale using `d3.interpolateTurbo`. A legend shows the MPG radius mappings, and interactive tooltips display the car make on hover. The D3 code uses `d3.csv` to load data, `d3.scaleLinear` for axes, and `d3.axisBottom`/`d3.axisLeft` for rendering, with SVG output and animated transitions on the tooltip.