This scatter plot visualizes the relationship between horsepower and weight for cars from the UCI Machine Learning Repository’s Auto MPG data set. It uses D3 v5’s `scaleLinear` and `axisLeft`/`axisBottom` to map the quantitative variables and render axes with gridlines. The code loads data via `csv`, applies numeric parsing, and draws semi-transparent red circles as SVG elements. Axis labels and a title are added using D3 selections, with styling defined in an external stylesheet.