This scatter plot visualizes the relationship between horsepower and weight for cars from the UCI Machine Learning Repository’s Auto MPG dataset. Red semi-transparent circles indicate data density where many cars share similar values. The visualization uses D3 v5 with `scaleLinear` for both axes, `axisBottom` and `axisLeft` for ticks, and SVG rendering via `select` and `append`. Axis labels and a title are added as text elements, while the data is parsed from CSV with `d3.csv`.