During a train ride to Yalta, the singers change the lyrics to Steve Goodman's "City of New Orleans" to fit riding a train in the Soviet Union.
At the time of the release of this show (1977) The USA and the USSR still were neck-deep in the Cold War, and Moscow wasn't too keen on the West seeing how far behind the Soviets were in automobile design. Unable to acquire Chekas or Volgas for the production, the producers substituted Checker Marathons for Chekas, and a 1955 Packard Patrician 4DR sedan with a Volga trunk-lid emblem to approximate a real Volga. (Both Soviet makes were blatant imitations of the American vehicles, anyway.)