This scatterplot displays 2025 vehicle models by engine size and combined fuel economy, with point size encoding annual fuel cost. A single Kia Niro (ID 34779) appears highlighted in purple. The visualization uses D3 v7 with SVG rendering, loading CSV data from a GitHub gist and parsing numeric columns via `d3.csv`. Linear scales (`d3.scaleLinear`) map the axes, while a summary panel reports dataset statistics, and axes are drawn with `d3.axisBottom` and `d3.axisLeft`.