So we really have a Sarah Palin pasta salad truck? Holy shit does that food look unappetizing. And she's a conniving, lazy idiot. They went full-Palin, not just "this is close enough to make a sort of Palin joke".
Maybe I'm just a Waffler conspiracy theorist but I can't imagine that that the Waffle Truck won the Truck Stop for any other reason than the certainty that Seoul Sausage didn't need immunity. It would have sucked what little tension there is out of the show to have Seoul Sausage win. I mean, the guy thought the waffle truck makes a bad waffle; there's your season in a nutshell.
Top three are, again, Seoul Sausage, Pizza Mike and Nonna. That's how it will be until four trucks are left. Coast of Atlanta appears to make decent enough food but they don't put any effort into figuring out where to sell it.