Ok lets get past the expected and practically obvious news. An acoustic guitar hard-case won't ever fit in the trunk. None of mine, down to a small-bodied Martin 000, will get in there. However there is room in the assumetrical trunk to get the headstock end of a soft case or a smaller fitted electric case in the left rear corner (left hand drive US, 2021 718 base model).
Here is a Reunion Blues "Continental" RBG-1 electric guitar gig bag (It will accept up to a 14-1/2" lower bout/body width. Big enough for a Tele, Strat, or Gibson ES339-390 small, thin-line hollow body but NOT an ES-335).
Here is
Here is a Reunion Blues "Continental" RBG-1 electric guitar gig bag (It will accept up to a 14-1/2" lower bout/body width. Big enough for a Tele, Strat, or Gibson ES339-390 small, thin-line hollow body but NOT an ES-335).