The phrase "door hardtop" refers to a type of car design where the roof does not have any support pillars between the front and rear side windows, creating a sleeker and more open feeling. Full definition
The SLC (C107) derivative was a 2 - door hardtop coupe with normal rear seats. (en.m.wikipedia.org)
Chrysler of Canada built the DeSoto Powermaster in both 4 - door sedan and 2 - door hardtop body styles, the latter not offered in the United States. (en.wikipedia.org)
1964 chevrolet chevelle malibu 2 door hardtop front 34 138100. (upcomingchevrolet.us)