well..... I don't know if this applies to ALL home depots...
but I know... most Tri-state area Home Depot... (NY, NJ,CT)... HD has truck rentals for like $20+..... I mean... real cheap....
they don't rent it so that folks like you who don't have BIG trucks can buy BIG stuffs from them and can carry it home...
I think those rentals are like $20 for first 90 min. then some $5 for each 1/2 hr or something like that... and no miles, no gas... nothing much extra.... (you use your own car insurance...)....
could be your way to go if its available...
cos even if the cab is like 2 piece design.... some of the parts might still be hard to fit in a small car.... (if that's what you got...)
hope it helps...