Client stopped by police for speeding infraction but no other erratic operation. Police note odor of alcohol, red, glassy eyes, unsteadiness and difficulty with balance and coordination. Admits to consuming “two beers”. Defense introduces client’s medical records to establish long history of degenerative arthritis in back, knees and ankles to explain 51 year old man’s struggles with standard balance coordination field sobriety tests. Friend testifies for defense that she kept only two beers in her house for beef stew broth and these were the only beers consumed by client before he left her house.