Actually not really all cars have one standard. Most German cars use Flexray which Openpilot does not currently support and is a bit more tricky to hack into as

Actually not really all cars have one standard. Most German cars use Flexray which Openpilot does not currently support and is a bit more tricky to hack into as described by Comma.ai: https://medium.com/@comma_ai/hacking-an-audi-performing-a-man-in-the-middle-attack-on-flexray-2710b1d29f3f https://medium.com/@comma_ai/hacking-an-audi-performing-a-ma...