Touring wine country with a hired driver was hot, but now it just means you can't control your drinking. Today, real oenophiles rent classic cars and self-drive their vineyard peregrinations. Wine industry veteran Ramiro Marquesini's new Slowkar in the Argentine winemaking capital of Mendoza rents lovingly restored Citroën 3CVs from the 1970s and 1980s. In Italy's Tuscan wine country, the father-son duo of Danilo and Federico Dini's five-year-old Chianti Classic Car outfits wine lovers with 1970s AlfaRomeos and Fiats for their tasting room tours. Both provide guides for the map-disabled.