Driver stopped at Roadblock. Police note odor of alcohol and glassy/bloodshot eyes. Driver admits to having a few beers in Boston before driving home. Driver arrested following one -leg stand and walk and turn test. Post arrest breath test results of .19 exluded by defense challenge to scientific reliability of breath test device and calibration protocol. Defense further offers medical records to establish existence of hip injury mentioned by driver during field sobriety tests. Not Guilty Verdict following trial.