This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG for 30 car makes. Each circle represents a car make, with its x-axis position showing horsepower, y-axis showing torque, and bubble size encoding highway MPG. The visualization uses d3.csv to load data and d3.scaleLinear for positioning and sizing, with d3.scaleOrdinal and d3.interpolateTurbo assigning colors to different makes. Interactive tooltips appear on mouseover, displaying each make’s name, while legend circles and color swatches explain the MPG scale and color mapping.