This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. It reads data from a CSV file using `d3.csv` and renders circles in an SVG, with axes and labels scaled by `d3.scaleLinear`. Bubble size encodes MPG, while color maps each make via a `d3.scaleOrdinal` using `d3.interpolateTurbo` for the spectrum. Interactive tooltips appear on mouseover, showing the make, with a legend for MPG values and make categories.