Well, assuming the cash could be found, a remake of the old SAL Solarium cars would fit that bill.
Hollywood Beach
Opiatephoto is spot-on suggesting the platform/style of the
SAL's
Hollywood Beach, Miami Beach, and
Palm Beach. SAL's
Silver Meteor carried them
NYC-Miami. Heck
Amtrak even had the cars in the early daze. Here's a photo of Hollywood Beach in Amtrak livery running beneath the catenary lines.
These
Sun Lounges,
which ran into New York, were configured as
Sleeper Lounges with five double bedrooms. If manufactured today, a number of options exists. Bedrooms. Or kitchen/serving area. Or more table and booths. etc. Compared to the
VIA Panorama Car, the Sun Lounge model of the 21st century would be closer to the
SSL, if you want the
Lounge.
As a Western Lines guy, I never saw or rode in a Sun Lounge. But a couple of years ago when I saw a photo of a SAL Sun Lounge, and started researching pics and data, I was intrigued at how neat they were, for back East with the clearance limitations. Amtrak dumped them apparently. What foresight.
. . . <<edit: add photo to AU post>>> . . .