are high end mercedes sedans bigger then cadillac fleetwoods?

I think fleetwoods are the largest luxury full size sedan’s ever produced

The biggest Merc is hardly 520cm. in lenght while the Cadillac is around the same or little more but in the 50s, 60s and 70s Cadillacs were 560 or even a bit more.
Now there is a Cadillac around 570cm. But this is not a normal car. It´s Maybach and Rolls competition, only its painting costs around $ 50,000.
Go to GM and order a Cadillac Sixteen and you will know what size and luxury means. The only sedan in the world bigger than this one is the Maybach 62 (620cm.)

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