Auto Motor und Sport
is reporting that Mercedes-Benz may be developing a four-door convertible version of its flagship luxury sedan, the S-Class. It will reportedly sport the longest soft top every produced and be powered by an equally large 6.0L V12 engine. We can expect the interior to be trimmed out in even more opulent luxury than a standard S-Class, as well. The S-Class convertible will surface in early 2007 as a concept at the North American International Auto Show in Detroit.

[Source: Auto Motor und Sport]