D 4301, a "two rooms and a bathroom" articulated beast from the year 1957.
K 2283 + c3 1110 mixed train: old motorcar with modern (D▄WAG-type) trailer.
L 502 + l 1702 + l 1776: although a number of bogie and articulated tramcars already existed in Vienna at that time, they still built 2-axle motor- and trailer cars in the early sixties!
F 746 + l3 1840: by the time the L-series (see above) programme was stopped, a bunch of almost complete car bodies were already built. In order not to waste these, they have cut the end platform, and "glued" an end piece to the 2-axle front-part using an articulated joint. To make this more interesting (at least for someone in Budapest - a city that never used this configuration), the end-piece utilized a 2-axle bogie. And this strange fellow was even strong enough to tow an l-series trailer car!
G2 2003 coming back on the track of the opposite direction.
The rear of the M-train..
... and the D1.
An E1, an E2 and an A (short ULF) series tram was also shown, but I'll skip those, because there is plenty of them still around :)
I'm only including this B-series (long) ULF because I like this set with the Volksgarten and Burgtheater in the background.
The last car on the menu was probably the oldest motorcar shown, namely D 244 from the year 1899. This car had an interesting life: in the 1920's it was converted to a trailer (d2 5110) and in the 1950's to a working car ("saltsprinkler" sz1 7174). It was rebuilt to its current form in 2003 in Romania. BTW the open-platform car was driven by the director of the Vienna Tramway Museum, who seemed to be pretty proud of the rolling stock displayed during the parade, and especially of this car. And I can understand him, although this was only a fragment of the whole collection.