Sure! Here's a simple drag racing game implemented as a single HTML file using JavaScript:
In this game, the player's objective is to race the car to the finish line by pressing any key on their smartphone. The car will start moving and continue to the right until it reaches the finish line. If the player successfully reaches the finish line, they will be alerted with a message saying "You won the race!".
Note that this is a basic implementation and can be enhanced with additional features such as multiple levels, opponent cars, and a countdown timer. But hopefully, this simple example gives you an idea of how a drag racing game can be implemented using JavaScript in a single HTML file.