I too am impressed by the 47 Frazer fact; hadn't known that one. I had seen the Packard and other luxury car links and the numerous discussions over the years. Fun is watching Jeremy Clarkson et al driving some of these 'barges'. The Chaika for quality (and needless complexity) rivals Packard's last sad years in 55-56 in Detroit, but even so the Packards were in comparison built by obsessive Black Forest engineer elves on steroids. Having grown up near Canada's national capital Ottawa, and lived there many years, I of course had the chance to observe many of these cars in action (or inaction) in the diplomatic residence parts of the city. Besides the Chaikas, I also saw lots of Skodas, Wartburgs, and the like. Remember, for many years we had dealers selling East Block cars to the public, and there were lots of Ladas, both the Fiat 124 like brick, as well as Samaras and Niva 4x4, the Czech Skoda 110LS ? (actually rather nice for an East Bloc car--the water-cooled rear engined one with the front trunk, like a Corvair, but better as it was a nifty side opener.) the Rumanian ARO 4x4 and Dacia cars (pale shadows of the Renault 12) and the like.
As well, there were Diplomatic imports of cars never sold in North America. The Dutch had DAFs long after they stopped selling them here, all of Africa imported Peugeots and other French cars, but my favourite car ever was the Argentinian Kaiser Carabela (deep rich red, with maroon leather interior) in Ottawa well into the 70s, and flawless.