This reminds me of the military. If there was an accident, they'd ask you if you'd had anything to drink in the last 24 hours. If you said yes, the accident was alcohol related.
I drive 20 miles to work every day. I drive during light traffic in the morning and heavy traffic in the afternoon. Half of the drive is city (downtown to suburbs) and the other half is highway.
From all that driving, I have one simple observation: 10% of all people driving cars are simply idiots. I'd like to get all hung up on drunk drivers, but I see more accidents and near accidents caused by cell phone drivers. I see SUVs being driven like they were sports cars and I see people simply doing stupid things while driving.
Someone has a couple of beers (if it was a couple and not the "a couple" someone tells cops they had) and gets in an accident, the accident was somehow caused by the drinking. Ignore the fact that this was a 17 year old kid. Ignore the fact that teenage boys are the most reckless drivers on the face of the earth sober.
Be responsible. Drive safely. Watch out for those that aren't. My guess is more than a couple if not all of these rules weren't observed in this situation.
MiniD