Man Flinging Big Bag

During walking the silent road, I found a car parked by the roadside. Many big bags were piled up on its luggage carrier. The bags were enough big to put a kid in. I wondered what was put in these bags.

In the meantime, a man came out from a sidetrack. He carried the same big bag. After he stopped just beside the car, he started to toss the bag onto the luggage carrier. And the bag flew off. Because the bag was big, I thought it was heavy. Yet it was my perceived notion. The bags were light. All the more, I became curious about the contents.