I didn't hear that they had firmly established that he was legally "drunk" at the time of the accident from the charred remains; all i heard about was the picture from a few hours before, at a local bar, showing him holding a drink.
I'll hold off on kicking the corpse until they are sure. After that, the MADD hatters can carve up the carcass & use it to influence legislators that half a beer is probably too much for a driver to have within four hours of driving for all i care.
It could've been a deer, another car, a mechanical failure, pure stupidity, a blowjob-related spasm, or chemical impairment that caused him to wreck.
edit* Didn't mean to be preachy. Just my opinion; they vary widely.