This bubble chart visualizes the correlation between average horsepower (x-axis), average torque (y-axis), and highway MPG (bubble size) across various car makes. Each circle represents a car brand, with its position determined by the horsepower and torque values, while the bubble radius encodes highway fuel efficiency. Hovering over a circle reveals a tooltip displaying the car make. Built with D3 v7, the visualization uses `d3.scaleLinear` for axes and bubble sizing, and `d3.interpolateTurbo` to assign colors to different makes. The chart includes a legend for bubble sizes and color-coded car makes, rendered as an SVG with interactive tooltips.