State police stop client at 2:30 a.m. at the Fitchburg/Leominster line after observing client pull-out widely after leaving a restaurant causing an on-coming truck to swerve out of its lane. Client continues to swerve and turn widely as cruiser follows. Trooper observes very strong odor of alcoholic beverage, very red, glassy and bloodshot eyes. Client argues with Trooper that he was not swerving while exhibiting thick-tongued, slurred speech. Client admits to consuming two beers and a mixed drink before driving. Client appears lethargic, confused and extremely slow in answering questions and responding as he continues to argue with Trooper. Client fails the HGN and refuses any other field sobriety tests.