You know, in North Carolina, I doubt I would have ever stopped on the side of the road to buy food. Especially if they were grilling right off a major road. But Miami is different.
If you go to Don Domingos on SW 107th, you can buy grilled meats right there. A churrasco is $8, cooked. Inside you can buy cheese, hot plates, or fresh cut meats. It's all pretty tasty.