This stacked bar chart displays car specifications—horsepower, torque, and highway mpg—for manufacturers like Scion, Kia, and Ferrari. Each horizontal bar uses segments scaled by value, with a legend mapping colors to specifications. The visualization is built with D3 v7, using d3.stack() to aggregate data and d3.scaleOrdinal() for colors. Hovering over segments dims them and a tooltip shows exact values. Data comes from the included data.csv file and renders as SVG.