This visualization presents a bubble chart exploring the correlation between engine CC (cubic capacity), maximum speed, and highway MPG for various motorcycle models. Each bubble’s horizontal position maps to CC, its vertical position to max speed, and its size encodes highway MPG, while color distinguishes vehicle makes. Built using D3.js v7 with SVG and animation, the chart includes an interactive tooltip that reveals the vehicle make on hover, plus a size legend illustrating MPG value thresholds. Data is loaded from a CSV file using `d3.csv` and scales are computed with `d3.scaleLinear` and `d3.scaleOrdinal`.