Police stop driver for marked lanes violation on highway. Driver admits that he is driving friend home after visiting “several” local bars. Conduct of field sobriety tests is compromised by training officer interjecting during testing on darkened noisy breakdown lane. Passenger establishes that driver had only a few drinks and was fine to driver. Any erratic operation was caused by joking, laughing and eating take-out food while driving home. Breath-test results of .12 BAC more than one (1) hour after driving are excluded due to lack of government expert witness to establish BAC at time of driving. Not guilty verdict following trial.