This interactive scatter plot visualizes the Auto MPG dataset from the UCI Machine Learning Repository, displaying relationships between numeric car attributes. Users select which columns map to the X and Y axes through dropdown menus generated by the custom `dropdownMenu` function. The visualization uses d3.v5 with `scaleLinear`, `axisLeft`, `axisBottom`, and `extent` to render axes, while circles animate from the chart center to their final positions over two seconds using `transition().duration(2000).delay()`. SVG rendering and styled tick labels complete the interface.