This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle represents a car brand, positioned by its horsepower and torque values, with the circle's radius scaled to highway MPG. Color differentiates car makes using a custom ordinal scale built with `d3.scaleOrdinal` and `d3.interpolateTurbo`. The chart is rendered as an SVG using D3 v7, featuring interactive tooltips on hover, a legend for bubble size, and axis labels. Data comes from a local CSV file.