This interactive scatter plot explores the Auto MPG dataset from the UCI Machine Learning Repository. Two dropdown menus let users select which numeric columns to map to the x- and y-axes, updating the visualization with an animated transition. Built with D3 v5, the chart uses `d3.scaleLinear`, `d3.axisBottom`, and `d3.axisLeft` to render axes and gridlines, while SVG circles animate into position via `transition().delay()`. The menus are constructed with a reusable `dropdownMenu` function that binds `option` elements to column names.