I rent a pickup truck from Home Depot if I have to. But I find that there tends to be a long waiting list for pickup truck in weekend afternoon (all the DIY people like me come to Home Depot on the same day). One time I waited for a couple hours before finally got it at
7pm or so. You may want to check your local home center to see what day of the week is best for renting a truck.
To avoid this trouble and expense, I always ask the home center people to cut the board into manageable pieces.
I doubt that they will cut the board into small pieces that can fit into a small car (mine is a SUV) though. You "may" need to get a DC-to-AC inverter to power a circuit saw and cut the board yourself in the parking lot. I don't know if the battery in a car is powerful enough for this task, and I don't know if the home center allows people to create saw dust in the parking lot. I am still thinking about this idea. Does anyone have any input on this idea? Thanks.
Jay Chan