This visualization displays a scatter plot of vehicle data, showing the relationship between horsepower and highway fuel efficiency (MPG). Each point is shaped according to the car manufacturer, with a shape legend identifying the makes. The plot axes are labeled for both variables. The example uses D3 v7 APIs including `scaleLinear`, `scaleOrdinal`, `symbol`, and `axisLeft`/`axisBottom` to render the marks and axes, with data loaded from a remote CSV file.