Host Guy Fieri takes a cross-country road trip to visit some of America's classic "greasy spoon" restaurants -- diners, drive-ins and dives — that have been doing it right for decades. These days they're booming again — being run by a whole new generation of owners, and catering delicious home-made food both to baby boomers and a slew of younger fans as well. It might be shack on the side of the highway in Tarpley, Texas, or a sports bar in Vegas famous for stromboli, these are the kind of places that make America great.