In 🇪🇺 we have a lot of food-trucks. We can have all sort of meals, such as Pizzas in the evening. Snacks for lunch time and other sort of foods.
More important than hard work is passion, because if you do not like what you do, you cannot be productive and offer great service. So I guess the owner of this vehicle loves his work and his customers feel it. That's what makes the business work.