This example visualizes the relationship between miles per gallon, horsepower, weight, and country of origin for vehicles in the Auto MPG dataset from the UCI Machine Learning Repository. A scatter plot encodes weight as circle size and origin as color, with tooltips showing vehicle names. It is built using the vega-lite-api to construct the specification, with vega-lite and vega handling rendering, while d3.csv loads the data. The visualization is configured with custom axis and label styling via the config object.