This example demonstrates how D3.js can load and display data from a local ES6 module while also using D3 to update the DOM. It shows a simple text message and a car data value (the year 2000) rendered on the page. The code uses `import { select } from 'd3'` to manipulate the `#message` div, imports data via a local `cars.js` module, and reads a property from the parsed JSON array. The visualization relies on D3 v5 loaded from UNPKG, with styling applied through an external stylesheet.