The document discusses the history and current state of vehicle hacking. It notes that as vehicles have become more computerized and connected since the 1980s, they have also become more vulnerable to hacking. The document outlines the various systems and connections on modern vehicles that can be exploited, such as Bluetooth, WiFi, and the CAN bus, and describes how this increased attack surface allows threat actors to intercept and manipulate data and even control certain vehicle functions remotely.