This bubble chart visualizes correlations between average horsepower, torque, and highway MPG for various car makes using D3 v7. The chart plots torque on the y-axis and horsepower on the x-axis, with the bubble radius encoding highway MPG. Data is loaded from a CSV file using `d3.csv`. The visualization employs `d3.scaleLinear` for axes and bubble sizing, `d3.interpolateTurbo` for color mapping, and `d3.scaleOrdinal` for categorical coloring. Interactive tooltips appear on mouseover, displaying the car make, while SVG rendering includes custom legends for both bubble size and color categories.