Police stop vehicle on highway for numerous marked lanes violations. The driver admits to being lost and distracted by an argument with his passenger and struggling to see the road through a fogged windshield. The officer notes an odor of alcohol, red/glassy eyes and somewhat slurred speech. Driver struggles with field sobriety tests, but also discloses several longstanding medical conditions with his hips and legs. Pre-tow search of car discloses cooler with many unopened beers, including non-alcoholic beers. DUI charge dismissed prior to trial.