[Kevin in NJ]

For regular production the Cabriolet was the high end car untill the 400A came along.

Unlike the roadster you could be totally weather sealed with roll up windows, but still have a top that goes down. So they were much more expensive to build. The roadster was a simple light weight body and very cheap to build. But they were not weather sealed even with the side curtans.

The town car was not really a regular production car as it was not inteneded to be a car driven by regular people.