I take it you’re unfamiliar with the wider world of LEGO MOCs… there’s nothing there that wouldn’t be repurposed - I see a lot of bits that would look great in a mech or spaceship MOC.
Depends on if you consider the other Porsche 911 set to be different enough. Those are the only two sets that use that particular shape of wheel arch, in 2 different colours. I’d say that made them unique.