This example visualizes the relationship between car origin and horsepower using a scatter plot of individual vehicle names as tooltips. It leverages the Vega-Lite API to declaratively define the chart, with D3.js handling CSV data loading from an online auto-mpg dataset. The visualization uses semi-transparent point marks with custom configuration for dark text and light gridlines, and it automatically sizes to fit the browser window. The code integrates Vega, Vega-Lite, and the Vega-Lite API library, with tooltip functionality provided by Vega Tooltip.