I'm not saying this is silly,
.. well, ok, it is a little silly.
But silly or not, I actually have to commend you for your commitment. If you are truly driving your car for *three hours* plus a bunch of other steps *every time* you want to see if a particular error can be reproduced, that's showing some serious dedication. I don't really see what's in this for you anymore, you could have just swapped cars, accepted a few firmware updates, whatever, and moved on.
Tediously obtaining data points based on a hunch and then inviting others to see if they can reproduce your results has a name: it's called 'the Scientific Method'.
Or 'insanity'.
I can't tell which applies more here.
But whatever it is I'm still checking on this thread every once in awhile. It's been an entertaining show.