This interactive scatter plot visualizes the relationship between car horsepower and fuel efficiency (MPG), with data points colored by the car's country of origin. Built using D3.js v7, the visualization loads CSV data from a GitHub repository and renders it as an SVG with smooth hover tooltips displaying detailed car information. A legend distinguishes between USA, Europe, and Japan vehicles. The implementation uses standard D3 APIs including `scaleLinear`, `scaleOrdinal`, `axisBottom`, `axisLeft`, and `csv`, applying a `transition` for animated tooltip effects.