Diners, Drive-ins and Dives

Sweetie Pie's (St. Louis, Mo.) • Smokey Valley Truck Stop (Olive Hill, Ky.) • Roberto's Mexican Food (Phoenix, Ariz.) Guy Fieri goes where the recipes really do come from mama: A St. Louis landmark where a former backup singer is dishing up real deal soul food; the Phoenix gas station where everything's Mexican authentic and the Kentucky truck stop with real country cookin'.