It's amazing how much useless bits of information have been saved by my brain. I really don't need to know the key code for my parents' 1981 Honda Accord that we sold in 1996, nor the VIN number for same.
My father reckoned that he could remember every telephone number he had ever dialed and there was a teacher at school who would learn the whole of the local bus timetable just for a mental exercise.
"People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.