This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes, with each bubble’s position set by the x- and y-scales for horsepower and torque, its radius by the z-scale for MPG, and its color by a d3.scaleOrdinal mapping makes to interpolated Turbo colors. Hovering reveals a tooltip with the car make. The chart includes axes, labels, and a legend for MPG values. Data loads from `bubblechart.csv` into an SVG rendered with D3 v7.