Use "pileup" in a sentence

1. If I don’t keep moving, we could die on this thin strip of safety, he continued as his hungry eyes searched every piece of vegetable trash that continued a slow steady pileup along the other side of the thin line of rather slick earth

2. Our boat smashed into the pileup and we were thrown into the air, straight over the gates, over the pool, and down toward solid asphalt

3. How could anyone have survived such a horrible pileup? Have you checked for survivors?”

4. They thought they had me once and a pile up ensued, but I slipped out from it to the side and began to hack away at them as they still fought each other within the pileup