This interactive bubble chart visualizes the relationship between horsepower, torque, and highway MPG for 31 car makes. Each circle is positioned by horsepower on the x-axis and torque on the y-axis, while its radius encodes highway MPG and its color represents the manufacturer. The chart uses d3.csv to load data and d3.scaleLinear for positioning and sizing. Hovering over a bubble triggers a tooltip displaying the make's exact specifications. A legend identifies each make, and axes are labeled with descriptive titles. The implementation uses d3.axisBottom, d3.axisLeft, and d3.schemeTableau10, rendering SVG circles with animated transitions via CSS.