This example shows the top speeds of fifteen electric vehicles using a horizontal bar chart, with brand names on the y-axis and speed values on the x-axis. It uses React hooks (`useState`, `useEffect`) to load data from a CSV file via `d3.csv`, then renders SVG rectangles with dimensions computed by D3’s `scaleBand` and `scaleLinear`. Custom tick marks and gridlines are drawn manually, and the chart updates through React’s declarative rendering without D3’s join/update pattern.