They're just superior cars (though I have an interesting not Japanese idea for my next lore mod ) Paid since it's lore friendly That's true for the CSP because it was supposed to be a quick project (and the Evo because I was bad at modding back then), though I have a real car planned that will have more effort than even the Signia Claria took about 7 months, Signia took 5 and a half, CSP took about 3. I have a bit less time for modding currently but I'd assume somewhere around the 6/7 month mark Rotary
As someone who sees these cars daily I have to say you absolutely nailed them. Would love to see this skin pack evolve to other modern cars in beam.