BTW, one of my pet peeves is the 450 SL owners who call their cars "convertables" [sic]. They are wrong on two counts: spelling and the fact that SLs are roadsters.
I always thought that it was the presence of the bolt-on coupe hardtop that made it 'convertible': from coupe to roadster and back. The point was stretched long ago to include the folding soft top as well. The true roadsters I always thought were equipped, at best, with a tonneau cover. Flying goggles, trench coats, and long scarves too. But I'm willing to be wrong! -- Jim