Replying to Ns help: my friends in the shit and i need your advice!!

well last tuesday night my mate was driving home from a party drunk. alot of my mates do it, its stupid and they know that, but they run the risk, and this time it turned to shit.
He was driving 120kmph in a 50k zone, so obviously going mad fast and spun out and crashed. Him and 2 girls in the car were scratched and bruised but the other guy wasnt wearing a seatbelt. He went to hospital and was on life support for awhile, now he can open his eyes, but is non responsive, its still touch and go, but its likely hell have major brain damage.
I saw the guy who was driving last night and hes fully messed up. once hed realised what he had done he tried to kill himself, and last night he was crying the whole time. Hes a fully legit dude who fucked up big time. but now his lifes fucked. Depending on what happens to the guy whos hurt he'l probably be looking at major jail time as he was 5x the legal blood alcohol limit. i know that your probably thinking it servs him right for drink driving and for being an idiot, well i agree that he was being stupid, but hes not like that at all, and now the rest of his, and the other dudes lifes are fucked. their both school kids.
so ns, what do you think i should do to help, obviously just hope to god that the other guys ok, but how do  you try and support someone whose realistic enough to know hes in the shit?

spark notes: my mate drunk drove and crashed doing 120kmph. The other guy in the car wasnt wearing a seatbelt and is in hospital originaly on life support and now in a comba. my mates is fully messed up about what he did to the point of trying to commit suicide. Hes looking at mad jail time depending on the outcome of the victim. hes a good dude whose made a big mistake whilst being drunk and now his whole life is ruined. what can i do to help?