This bubble chart visualizes the correlation between average horsepower, torque, and highway MPG across car makes. Each circle’s position encodes horsepower (x-axis) and torque (y-axis), while its radius scales with highway MPG and its color distinguishes the car brand. The visualization uses D3 v7 with SVG rendering and includes interactive tooltips that display the car make on hover. A legend shows the bubble-size scale for MPG values and color-coded dots for each manufacturer. The chart reads from a CSV dataset and employs the `d3.scaleOrdinal` and `d3.scaleLinear` APIs for color and size encoding.