Acela82 wrote:when Amtrak last used Dome Cars in regular service.For ordinary domes, probably when the "City of New Orleans" went Superliner in the 1980s. I think the "Capitol Limited" was converted earlier. About that time, Amtrak did a test run on the "Lake Shore" Boston section, but never did anything more. I think the "Capitol" and the "City" were the only Head End Power trains with domes (coach only), unless the "Cardinal" also had them for a short time.
I think 3 full domes were converted, but as you mention, only "Mountain View" is in any kind of Amtrak use now.
I don't think that any other more exotic kinds of Amtrak domes were ever converted to Head End Power.