An animated bubble chart displays BMW sales volumes from 2010 to 2024 for eleven car models across six world regions. Yearly transitions show sales evolving over time, with color-coded bubbles representing distinct models. Users can filter by country and model via checkboxes, pause or reset the animation, and hover for tooltips. Built with D3.js v7, it uses `d3.rollups` for data aggregation, `d3.csv` for loading CSV data, and SVG transitions driven by a JavaScript interval to animate between years on a scatter plot.