4x8 sheet of plywood or drywall. For many people who want to perform DIY home improvement jobs, this is the smallest useful size of truck bed.

I’m not sure why this myth is so pervasive on HN. You do not need a 4x8 truck bed to move sheet goods, you only need a bed 4 feet wide and a tow flag. Google is full of pictures of people moving stacks of goods with mini trucks and even sedans. Know how to secure your load.

Ah, got it. Thank you! :) Good to know.