You'll recognise three types: on the first pictures a modern type of Polish-Hungarian production, then pictures of an earlier Hungarian articulated type (made by Ikarus, which used to be the semi-monopolist bus builder in the 'Communist' Bloc, their chief factory is just a kilometre from my home). Further down you'll see a typical sillyness of planned economy: an older Soviet type; Ikarus used to make non-articulated units too, but for some reason those went to the USSR. (On the other hand, on the bad inner-city roads of Budapest, the old Russian type's suspension is better than the hypermodern new one's...)
*Lunatic*, n. One whose delusions are out of fashion.