It might look a bit out of place with Cary Grant and Audrey Hepburn, since they only made one film "Charade".
And that was set in the winter, 1960s France, and featured mostly French marque sedans.
The s600 Cabriolet has appeared mainly in Japanese films of the sixties and none with Cary Grant.
But not that I'm nit picking.
Sorry, I just can't help it.
The model and your build is exquisite.
About as realistic as you could make it, in my opinion.
Nice job.
I saw a builder on youtube who uses Red and Orange Sharpie markers to colour chrome taillight and marker lenses.
And the effect looked very realistic to me.