WINONA, Minn. – A Wisconsin driver was arrested for impaired driving after almost swerving into several parked cars downtown, police said. Michael Sheridan Dahl, 53, of Fountain City, was stopped and tested for his blood-alcohol content. The measuring device showed 0.08%. Officers said there were impairment clues before the test — an odor of alcohol, blood-shot and watery eyes, and slurred speech. Also, they said, Dahl flubbed roadside tests on walking straight and touching his nose. Thus was about 9:35 p.m. in the 100 block of East Fifth Street.