MA Driver stopped driving to her parents’ house based on cell phone report of erratic driving.  Police follow car and note lane control issues before stopping car.  Driver admits to drinking but claims solo cup in center console with liquid and ice was left there by her daughter earlier in the evening.  Driver refuses to participate in Field Sobriety Tests and Police make arrest.  Booking video is not preserved and produced despite timely request from defense counsel.  DWI charge dismissed prior to trial.