Okay girl! Breathe in.... Breath out.....
Good Now sit and calm yourself.....
Okay, wow, that sounds like some very bad luck!!
But try not to worry. My mom was just as stressed and freaked out when I had to learn to drive. She still tends to freak out when I drive. lol. But she's learned to get over it. Your son will be a good driver. He just has to learn and be taught what is good & bad in driving. Maybe enroll him in a drivers ed course (if you haven't done so already). Drivers Ed helped me alot!
The car breaking down constantly sounds aweful

I mean how many times can a car die??? Just think positive. New battery equals new life for car.
Its good to vent. It takes some stress out of you. Maybe even take a nice relaxing bath or just do something that will make you feel good. Eat a pound of chocolate if you want too. lol. Kind've odd how things go in threes. I have the same thing with me. 3 problems and then its usually good after that.
Good Luck Squirl!!