dome car

plural dome cars

1. rail transportA railroad passenger car with a glass observation dome.

   The Canadian Pacific Railway is about to introduce dome cars, already popular in the United States, which will add, if possible, to the scenic delights of the journey through the Rockies.

   1954 February, Trevor Holloway, “Canada's Transcontinental Routes”, in Railway Magazine, page 130

   1 more example

   The "Rheinpfeil", from Dortmund to Munich, with which the "Rheingold" exchanges coaches at Duisburg, is now composed of similar air-conditioned stock, apart from a dome car, which continues to operate only between Dortmund and Basle; [...].

   1963 June, “The "Rheingold" beats the "Mistral"”, in Modern Railways, page 385