The Great Food Truck Race - Season 6 Episode 5 -

When the top three teams arrive in Tulsa, Tyler Florence takes away their phones and internet abilities: All of their research, outreach, marketing and navigation have to be done the old-fashioned way. He then challenges them to build roadside attractions to pull in customers. On their second day, the teams sell at one of the last drive-ins on Route 66. They race from car to car, knowing that each lost sale could be the one that sends them home.