This buggy design has wheels that snap together with an axis that runs through the frame. 

The hole in the back is also repositioned for a place to propel the motor.

There are plenty of youtube videos that show ways to make rockets out of a match. You can make these easily and cheaply and place something ignitable out of the back of the rocket so that the rocket can be placed into the hole in the back of the buggy. The back can then be lit, and your buggy will send off on its own! 

Remember to take caution when working with fire and have fun!