This bubble chart shows the correlation between average horsepower, average torque, and highway MPG for different car makes. Each circle’s position maps horsepower (x-axis) and torque (y-axis), while its radius encodes highway MPG and its color distinguishes the car manufacturer. Built with D3 v7, the visualization uses `d3.scaleLinear` for axes and bubble size, `d3.scaleOrdinal` for color assignment, and `d3.interpolateTurbo` for the color palette. Interactive tooltips appear on mouseover via custom event handlers, and the chart includes a legend for bubble size and categorical colors.