You check all your Earthing and points as part of your maintenance routine? I think not. And no, I couldn't drive it because it was pitch black.Bad maintenance of an old car. At least the engine was running so you could drive it.
I see far more problems from p38 owners stranded than L322 canbus errors. Just because you're scared of it and don't understand it, you chastise it.
It really isn't a complex system and on the Ford version, it's pretty reliable.
Have a search and see how many issues you can find on here that were related to faulty canbus. I certainly haven't seen one in recent months.