Oh, in that case I might have worded my post badly. I explicitly meant non-critical stuff would make sense to not openly show. There's so much that can go beepy beep on moder wheeled computers that showing it all to the user would result in needing 10x the telephone support staff.

And there's a lot that's perfectly fine to leave as it is, and just have someone look at it the next time it's in for a check-up anyways.

For stuff where the car can break down, yeah fuck no, don't hide that. I was mostly musing how to do a shown/hide split in a sensible manner.