Local Yelp reviews and word of mouth can help him decide a good mechanic. While not completely fool proof they can give a good indication of a shop's aptitude and it's attitude towards their customers
Your son will figure it out.
My son moved to Hollywood when he was 19 and struggling. Played in a band all night and slept during the day. I wasn't happy about it.
Twenty-five years later he still lives in 'West' Hollywood, married and is in upper management of an advertising company he began working for when he was twenty.
He credits the work ethic his grandfather and I Instilled in him.
I'm happy.
