It's always handy to waterproof your RC car because your toy car is going to tread in a lot of dirty - and sometimes wet - ground. This means that any electric circuitry faces the risk of coming in contact with water and fizzing out.
So keep things safe by learning how to waterproof your remote control car.
This video will teach you how to take your entire RC car and make it water proof. Not just for water splashes but so that it can be dunked. Please note that this will not work on salt water. Keep your kit out of salt water.