LACROSSE, Wis. — An expanding juggernaut in automobile retailing, Dahl Auto, has purchased two dealerships 65 miles away in Rochester. Dahl, based in LaCrosse, announced the purchase of Happy Auto outlets for Hyundai and Chrysler brands. Sale price: $23 million. Dahl is a family business dating to 1911 when it began selling Ford Model T’s. Happy Hyundai and Happy Chrysler-Dodge-Jeep-Ram are side-by-side in Rochester at 4700 and 4800 Highway 52 North. Dahl’s first Minnesota dealership was in Winona in 2016.