Sure, I can provide you with a basic example of an open world racing game implemented as a single HTML file using JavaScript. However, keep in mind that the functionality and complexity of a complete open world racing game would require a lot more code and assets. Here's a simplified version to get started:
This example sets up a simple game canvas and includes a game loop which continuously updates and renders the game world. In this case, it draws a red rectangle representing the player's car in the center of the canvas.
To create a complete open world racing game, you would need to add various game mechanics, such as handling user input for car controls, designing racing tracks, implementing AI opponents, adding collision detection, and more. This simplified example serves as a starting point for your own development.