19 year old alleged drunk driver is stopped by police in early morning hours for marked lanes violation. Officer detects odor of alcoholic beverage and client admits that he did drink hours earlier. Field sobriety tests are unremarkable, but post arrest breath test disclosed .04 BrAC (per se offense .02 BrAC for Under 21 Drivers). Defense prepared to rebut accuracy of breath test in light of lack of evidence of impairment. DWI charge dismissed prior to trial.