This interactive scatter plot shows car sales data, displaying price in thousands of USD against horsepower for individual vehicles, with point size reflecting engine size and color/shape encoding vehicle type. The visualization uses D3.js v7’s `d3.csv` to load and parse the Car_sales dataset, and employs `d3.scaleLinear`, `d3.scaleSqrt`, and `d3.scaleOrdinal` to map numeric and categorical variables. Marks are generated using `d3.symbol()` with varying symbol shapes, including circles, crosses, and triangles, demonstrating a reusable charting function that separates configuration from rendering.