These cars are popular among hobbyists, enthusiasts, and children alike for their entertainment value and sometimes competitive use. 

SPECIFICATIONS 

1. Transmitter: This is the handheld device that sends signals to the car, controlling its movements. It usually has joysticks or buttons for controlling speed, direction, and other functions.

2. Receiver: The receiver is installed in the car and receives the signals sent by the transmitter. It decodes these signals and translates them into commands for the car's motors and servos.

3. Electric Motor: Most modern RC cars are powered by electric motors, which can be brushed or brushless. Brushless motors are generally more efficient and powerful, but also more expensive.

4. Battery: RC cars typically use rechargeable batteries to power their motors and electronics. These can be lithium-ion, nickel-metal hydride (NiMH), or other types of batteries.

5. Chassis: The chassis is the frame or structure of the car, onto which other components like the motor, battery, and electronics are mounted.

6. Suspension: Just like real cars, RC cars often have suspension systems to absorb shocks and bumps, improving stability and handling.

7. Body: The body is the outer shell of the car, usually made of lightweight plastic or polycarbonate. Bodies come in various designs and styles, from realistic replicas of real cars to futuristic or custom designs.