This interactive scatter plot visualizes the relationship between horsepower, miles per gallon, weight, and origin for cars from the UCI Auto MPG dataset. Built with the Vega-Lite API and rendered via Vega, it encodes each car as a circle positioned by acceleration and engine displacement, with color indicating country of origin and size reflecting vehicle weight. Tooltips display car model names. The visualization uses D3's csv loader to fetch data from a Gist URL, and the chart resizes to fit the browser window.