Okay, I can help you set up a basic webpage themed after the "Sugar Rush" game from Wreck-It Ralph. Please note that creating the actual complex racing game as seen in the movie is a very large project. This will be a simple themed page, which could be a starting point for adding a simpler game later.

This sets up the basic HTML structure, some candy-themed CSS for styling, and an empty JavaScript file. You can view the themed page in the preview.

Creating the full 3D Sugar Rush racing game as seen in the movie is an extremely complex task, involving advanced 3D graphics, physics simulation, AI, and extensive asset creation. That kind of project typically requires a large team of developers and artists working for a long time with specialized game engines.

Within this environment, we are limited to technologies that run directly in the browser (like HTML, CSS, JavaScript, and WebAssembly) and cannot use full game engines like Unity or Unreal Engine easily.

However, I can help you build a very simple 2D driving game with a Sugar Rush theme, where you control a representation of Vanellope's kart. It won't be the 3D race from the movie, but it will be a playable interactive element on the page.

Let's modify the previous setup to include a basic 2D game using the HTML Canvas.

This creates a canvas and draws a simple rectangle representing Vanellope's kart. You can move it left and right using the arrow keys. This is a very basic foundation, but it gives you an interactive element with the Sugar Rush theme.