This city’s heading back to its roots. During Prohibition, “Whiskeytown” supplied as much as 75 percent of the thirsty nation’s illegal alcohol, as rum-runners transported bootleg booze across the border waters from Canada. Today the city’s reviving its 1920s image with a modern twist as America’s newest whiskey capital. Detroit’s distilling laws have moved into the 21st century, allowing small whiskey vendors to mass-produce. Taking their cues from Michigan’s recent craft beer renaissance, small-batch distillers hope to boost the spirits of Motor City’s recovering economy.