MA Driver stopped by police for speeding and marked lanes violation.  Stop occurs as driver pulls into convenience store parking lot.  Driver has no difficulty with handing over documents.  Police note odor of alcohol and driver’s glassy eyes.  Post arrest breath test is complicated by failure of machine at arresting departments station.  Driver must be transported to another department for testing with result of .10 BrAC.  Defense prepared to argue arresting officer lack grounds for exit order and request for field sobriety tests.  DWI charge dismissed prior to trial.