This visualization uses the Vega-Lite API to render a scatter plot of the Auto MPG dataset from the UCI Machine Learning Repository, with miles per gallon reversed on the x-axis and horsepower on the y-axis. Circles are colored by country of origin and sized by vehicle weight, with tooltips showing model names. The code constructs the chart declaratively through `vega-lite-api` methods like `.markCircle()`, `.encode()`, and `.fieldQ()`, then renders it to SVG via the `vega` and `vega-lite` libraries, incorporating `vega-tooltip` for interactive hover details. Data is fetched as CSV using `d3.csv` from a GitHub Gist.