A reusable scatter plot built with D3 v6 visualizes car sales across three years (2019–2021). The SVG chart maps 2021 sales to the x-axis and 2019 sales to the y-axis, with each circle representing a car type. Every two seconds, the x-axis animates to a different year's sales data, cycling through 2019, 2020, and 2021, while the y-axis remains fixed. The visualization uses responsive sizing and smooth transitions, making it a clear example of an animated, reusable D3 chart component.