This should have been a Concept for their bread-and-butter saloons. If they showcased an E-class sized saloon concept with this grill it would have been more interesting than another Maybach 6 type coupe that won't ever make production.
The coupe should have been shown in Sterling Moss Silver in my opinion, it would be far nicer to have a lighter colour to show the contours than this dark matt black.
Nevertheless this coupe still does look very nice, I like the profile with the short front overhang and that massive bonnet, invokes memories of past models from the 30s and 40s with their huge engine bays.
Certainly, enough space under that hood to install the secret 8.0lt V16 800SEL engine that was earmarked for the W140 but with latest tech to reduce emissions to Euro 7 requirements.