RC stands for Remote Control
Cars have a receiver inside which talks to the radio (remote). Most radios that you purchase will have the receiver as part of the package. There are some radios that don’t come with a receiver but has the ability to bind to other brand name receivers.
Your receiver will talk to the servos. When you plug a servo into a receiver that’s what makes the steering turn in a car. The receiver will have an additional port that will allow you to plug something like a fan into it.
You’ll also hear people talk about an ESC. It’s usually attached to the motor and when you press on the throttle from the remote it engages the motor. ESC devices can also have fans that sit on top of them to keep cool. If you run cars for a long time it is possible to overheat them. Some cars will come with an auto shutoff mechanism to keep it from overheating.
