I noticed going from my first second hand car probably built in the early 90's or earlier, to my next one from 2000 that there was a lot less stuff that i could

I noticed going from my first second hand car probably built in the early 90's or earlier, to my next one from 2000 that there was a lot less stuff that i could fix myself - due to the computerised nature of many things. I wonder of there would be a market for a purely mechanical (modern) car like the old days. (One of the beauties of mountain biking I see being lost is the ability to fix maybe 90% of problems with a small pack of tools that you can carry about with you. I can see electric bikes being problematic for that. They will get you further from civilisation and fail worse).