You are correct, there is always a need for someone to change oil down at the local truck stop and to run the tire change service on the highway’s.
That's right, especially if you want guaranteed income and likely a six figure one at that. There will be cars around for a long time and will always be the need for them to be repaired.
A good car mechanic is in high demand these days since there has been a tendency in the public schools to downplay non-college degree programs.
When the economy tanks as it certainly appears to be doing, those who earn money and eat will be those with practical skills.