If treats stocked 3D printed PETG magnum side covers, trunk and trunk lid, would you buy them? Target retail price would be $40ea for side covers, ~$30 for trunk and lid. The trunk is way easier to make.
PETG is more chemically stable than PLA and ABS, and way more thermally stable than PLA. I haven't had any complaints about switch bases melting and those are made from PLA. Plenty of people have screwed too big of screws in them and cracked them - but that doesn't count.
PETG has a glass transition temp of 190*F, so, I kinda doubt anyone would have issues in a hot car, trailer or garage.
NS50 trunk lids would also be PETG, and come with a replacement lock and key.
Lastly, 3d printed switch bases, and the pewter castings from moped junkyard are about to become irrelevant. ;)