A tractor trailer loaded with straw bales would drive up where the ferry in the middle though a tractor standing with straw bales.
Probably had the driver too late to realize that there was not enough space next to the other
truck and wanted to reverse ride off the ferry.
The weight of the load and ramp up the trigger pressed the ferry from shore
with the result that the truck just kept stabbing at the ferry but the trailer and its cargo in what was stabbing.