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Resolve #7 
While it's definitely not necessary, I would explicitly set the names of the trucks in this case so we can make sure that they're different and make it more clear what's going on to the reader.

```ruby
pizza_truck  = FactoryGirl.create(:food_truck, name: "Pizza Truck")
taco_truck  = FactoryGirl.create(:food_truck, name: "Taco Truck")
```