I have considered becoming an auto mechanic.  I am fascinated by engines and how they work!
That must be a hard job! Trying to work with a variety of automobiles.
I agree.  It seems like an interesting career though.
Yup as long as you can diagnose the program quickly and accurately you can be successful,. 
Do auto mechanics have to go through a lot of school?
I'm not sure but they have to know basic vehicle maintenance as well as preventative maintenance.
It seems like such a broad knowledge needed to be effective.  The learning probably never ends since cars are always changing, right?
Yes and since they either repair a specific part of a vehicle, they change often with modernization.