This interactive scatter plot visualizes car data from the UCI Machine Learning Repository’s Auto MPG dataset. Users select which columns map to the X and Y axes via two dropdown menus, built with a reusable `dropdownMenu` function. The plot uses D3 v5 APIs including `scaleLinear`, `axisLeft`, `axisBottom`, and `extent` for scaling and axes. Circles are rendered with SVG and animate into position via `transition().duration(2000)` with staggered delays, while axis labels reflect the current column selections.