A line of cars stretches for a mile at the Gulf Route 65 gas station in Rio Grande, Puerto Rico.

People have been waiting in line inside cars and on foot with gas canisters since before sunrise on Monday in Rio Grande, Puerto Rico.

Kiara Rodriguez de Jesus, (left) 23 — with friend Stephanie Norat, 26 — finds shade during her family's 10-plus-hour wait.

Gas station manager Carlos de Armas says, "The problem is communication. We don't know where the truck is."

Puma Gas Station, across the street from the Gulf Route 65 gas station, was damaged during Hurricane Maria.

People play dominoes while waiting in line for gas. Authorities in Puerto Rico say there isn't a gas shortage.