By the time police stopped him, the driver of the Ford Escort had sped out of an East Austin alley and slammed into a curb. Oscar Medina, 25, could barely walk a straight line or count to 10 when he got out of the car. Reeking of alcohol, Medina told an officer he had drunk seven beers that night and had had nothing to eat since breakfast. A breath test indicated his blood alcohol level was .163 percent, twice the legal limit. Medina, who was arrested June 7 and jailed on a charge of drunken driving, contributes to an unfortunate...