LOL.
When I was a young teen, my bro and I used to go along with dad on delivery trips in his semi. He hauled steel coast to coast. In the summer if freight was slow he'd bring onions back from the southwest to the produce markets in Philly, NY, Boston, etc. Depending on moisture content (weight) he'd have anywhere between 900 to 1000 bags on board. 50 lb bags. Sometimes they were loaded directly on the trailer right out of the field, but they were ALWAYS stacked in the trailer, 50 bags in a row.
At the produce market, they would set a stack of pallets at the end of the trailer. The DRIVER stacked the bags on the pallets, or you paid a couple of vagrants / day workers at the dock to unload your rig.
Dad would say "stack it right the first time, if it falls over you're picking them up the 2nd time."
His last rig before he retired: '86 KW, 60" sleeper, 475 hp twin turbo Cummins, 48' Al-King flatbed.