This example visualizes the relationship between horsepower and weight for cars, using a scatter plot where each circle represents a vehicle. The x-axis maps weight and the y-axis maps horsepower, with axis labels and a title displayed prominently. The code loads the auto-mpg dataset via `d3.csv`, parses numeric fields, and renders the plot using `d3.scaleLinear` for scales, `d3.axisBottom` and `d3.axisLeft` for axes, and SVG circles. Axis ticks are styled with `d3.format` to abbreviate large numbers, and grid lines are generated via tick sizes.