This bubble chart visualizes the correlation between power output, torque, and efficiency rating for various car manufacturers. Each bubble's position maps to power and torque on the x and y axes, its size encodes efficiency rating, and its color distinguishes the manufacturer. Built with D3 v7, the visualization uses `d3.scaleLinear` for axes and bubble sizing, `d3.scaleOrdinal` for color encoding, and SVG circles for rendering. Interactive tooltips appear on mouseover, displaying manufacturer details, while a legend indicates efficiency values.