As a former professional paramedic I know that somehow the drunks survive those crashes but often, but only the innocent are killed. Having to treat those -I guess posting rules do not permit to use an approriate term- always sucked.
Someone causing a crash with an alcohol-level like this is not drunken driver, but a driving drinker. A person like me who rarely drinkes alcohol would be in a deep coma with that level. Only a person with a bad alcohol problem can stay conscious enough to drive.
It should also be asked how his environment could let him drive, i.e. family. co-workers. Someone with a habit like that must have attracted at least some suspicion.