This interactive scatter plot visualizes car sales data loaded from a CSV file, letting users select which columns drive the x and y positions, point size, and color. The reusable chart component, built with D3 v7, exposes getter-setters for its scales, axes, and tooltip formatter. It applies d3.scaleLinear, d3.scaleSqrt, and either d3.scaleSequential or d3.scaleOrdinal for encoding, while cleaning numeric values to handle currency, percentages, and parentheses. Rendering is SVG-based, with interactive hover tooltips.