The would have gotten it, but they would have to take mine by force. I sure as hell would not have voluntarily complied.
The say it is voluntary...
I bet the sample will be skewed by compliant drivers to indicate more sober than not sober.
The test administrators know this is true, hence the farce of voluntary.
So I understand their problem, but every facet of this experiment is ill designed. Only heavy handed gubment could ever conceive of something this vile.