There are a few things you can do to clean a rc car. The first is to remove all the dust and dirt. This will make it easier to see everything and make it easier to clean. Next, use a vacuum cleaner with the hose attachment to suck all the dirt and dust out of the car. Be careful not to damage the plastic parts of the car. Finally, use a bucket or spray bottle filled with water to clean all of the surfaces of the car. Make sure to get all of the dirt and dust off of the surfaces before you start cleaning.