Errands I recall from the top of my head from having owned various vehicles, exclusive to only those applying to internal combustion vehicles:

    Repair of the radiator. 
    Emissions testing. 
    Oil change. 
    Repair of the ignition system (90's Honda CRX). 
    Repair of the fuel pump. 
    Change transmission fluid. 
    Replace timing belt. 
    Ignition related tune-up, including change spark plugs (Toyota.) 
    Re-adjustment of ignition timing. (Toyota)
    Replace car battery.
    Replace alternator.
    Replace starter.

Younger folks aren't as aware of things like the above, because the details of this are now hidden away behind mandatory dealer visits. Seems like our society is getting more authoritarian and encouraging you to know less. It will be far easier to make electric vehicles reliable and they will be much more reliable than internal combustion engines, and this will save society countless person-hours which can go into other sectors of the economy and human advancement.