I'm terribly sorry about your nephew's accident and will pray for his recovery.
The laws punishing drunken drivers are not strong enough, but people who drink probably, and unfortunately, would not be stopped from being a public danger even with harder jail sentences.
My sister-in-law's sister was killed at the age of 34 by a drunken driver, she left behind a three year old boy and and the rest of the family has never recovered from the tragedy.