Would that be a pickup truck with a club cab / 4' bed or a mini with a 7.5' bed?
Cars have a better chance with 16' lumber, usually.
You don't have any friends with a pickup truck? Simply ask for some assistance, that way! Buy some beer..... or burgers, steaks(?).... and, further, have them over for a get-together installing the things, where you are wanting them. Make it a social gathering, not a job. Surely your friends understand your situation, as such, and may likely be looking for an opportunity for a social gathering.
Sonny