So I decided to play with the idea of how an @Amtrak electric double decker would look like today. This is the result - Amtrak TWINDEXX.
The train is based on #Alstom (ex-Bombardier) FV-DOSTO, made for SBB. In this scenario, it has 2x first (1-stw), 1x business, 1xbus/resto and 4xcoach class (1-stw). For Europeans, 'coach' is the USA equivalent of 2nd class.