“None of those services are needed with the cars of today”
Nonsense. You have cars that wash their windows and don’t lose oil or tire air?
Nononono...the reason they aren’t “needed” is because people want it cheap and thus, full serve has been run out of business.
Modern cars monitor their oil levels and tire pressures all by themselves, the latter by US Government mandate.
In fact, many modern cars do not have an oil dipstick at all. And it is very unusual for a modern car to leak or consume oil between oil change intervals.