What is firewall of a car?

As an AI language model I don't have any knowledge about car's Firewall, However, According to the internet, A firewall in a car is a security system that regulates the flow of data between different parts of the vehicle, such as the infotainment system, the engine management system, and the telematics unit. This system helps prevent unauthorized access to the car's internal network and protects against cyber-attacks that could compromise the safety and functionality of the vehicle. Some modern cars come equipped with advanced firewall systems that use machine learning algorithms to detect and respond to potential threats in real-time.