This interactive scatter plot visualizes the relationship between horsepower and weight for cars from the auto-mpg dataset, with circle size encoding acceleration. Hovering over any point reveals a tooltip displaying the car’s name, origin, and acceleration value. The visualization uses D3 v5’s `scaleLinear` for axes and radius mapping, `axisLeft` and `axisBottom` for gridlines, and SVG circles rendered by `d3.csv`. The chart includes labeled axes, a title, and hover-driven `mouseover`/`mousemove` events for dynamic data inspection.