Alleged Drunk driver in NH stopped by police waiting for his car at toll booth due to citizen cell phone report of erratic operation. Driver stops and is asked to exit. Police detect odor of alcohol, but no slurred speech. Driver does well on most filed sobriety tests but allegedly fails horizontal gaze nystagmus (HGN) test and is arrested. Post arrest breath test results of .14 BrAC. Defense challenges validity of field sobriety tests and officer admits on cross exam that HGN is invalid due to improper administration. Defense excludes breath test evidence due to regulatory violations and lack of confrontation of witness issues. Not guilty verdict following NH DWI trial.