Consider the incident which was reported this week by the Associated Press.
In Burlington, Washington around 1am Wednesday morning, a car slid off Chuckanut Drive and onto the property of a Washington State Patrol facility. The 49-year old male driver got out of his car and went to an emergency phone to call for assistance. He and a passenger were eventually transported to a nearby hospital.
But a WSP spokesperson said that they believed the man was drunk.
Apparently, this statement was not made with the support of any evidence such as breath test results or even a field sobriety test. It should also be noted that the WSP facility sits just off a roundabout and near a curve on Chuckanut Drive. In the early morning hours, it wouldn't be difficult to miss a curve and slide onto the WSP's lawn - sober or not.
Here's the truth of the matter: many perfectly sober people drive unpredictably. And many legally intoxicated drivers operate a car quite well (even better than regular drivers, in some cases). So it doesn't benefit anyone to toss around assumptions of drunkenness before they are proven.