This clip is a commercial - or partial commercial - for a new DeSoto car. Appears to be from the '40s or '50s.

A title card says “Presenting the New DeSoto." Two women in gowns pull back curtains to reveal a DeSoto revolving on a pedestal. A woman looks it over happily and sits in the driver’s seat. Two DeSotos leave the garage of a DeSoto car dealership.