This interactive bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across 31 car makes. Each circle’s x-position maps to horsepower, y-position to torque, and radius to highway MPG, while color distinguishes manufacturers. Built with D3 v7, the SVG rendering includes hover tooltips showing the make, a bubble-size legend for MPG values, and a color legend for all makes. Data is loaded from a CSV file, with scales created using d3.scaleLinear and d3.scaleOrdinal, and interactivity handled via mouseover, mousemove, and mouseleave events.