Earlier quoted context omitted.
I can fit one of those into my Ford Fiesta with the hatch closed. :smh:
Closed and latched? I find that hard to believe (used to own an 80s Honda Civic which would allow "closed but not latched" for 4x8 sheet goods) ...
No way does the length check out though. I haul lumber in a similar size car and 8ft is basically trunk to dash so there's no way he's hauling an 8ft by 4ft sheet without it conflicting with the driver's seat if not torso.
Individual boards should fit in just about anything though.