It looks like a fancy metal strainer. any sufficiently fine paint filter should work just as well, even a paper filter would do the same (automotive shops use paper filters, so they can't be that bad)
You're full of bs. the artists sell them for $95 on hum3d, then they won't want you giving them away free.
First line of the license:
The CUSTOMER may NOT:
redistribute PRODUCT or modifications/parts of the PRODUCT;
3D printed from Thingiverse JETSONS CAR by A_SKEWED_VIEW_3D
i printed it in PLA but i cut it in half in the print software so top and bottom had no support marks (supports create texture like on the seat).
it was painted in Tamiya metallic green, with black seat and brown interior.
the clear dome is a Domino's Shake lid.
Size is about 4 inches.
on Flickr
3D Printed in resin on my Creality LD002R. i opted to print as a solid chunk, giving the model a nice heft when held.
and I airbrush painted in tamiya gold with an over spray of tamiya clear orange for a bronze look.
I did a bit of chrome and painted over with clear blue and clear red for the lights.
on Flickr