Back to the Sviridov: apart from the obvious Sabre Dance, I'm wondering if there are other notable brief Russian examples in the severely motoric and delightfully vulgar vein?
If you're still collecting 'running motors' (not necessarily Soviet ones)... the somewhat unlikely (?) source of a concert this evening by Sir Andras Schiff in Moscow gleaned a very nice example?
Bartok Piano Sonata Szd80.
Would make a nice addition to your recital programs, Mr Auto? :-)) There's a Stravinskian 'Rite' of a motor in the first movement - while the last movement has a more light-hearted toy clockwork motor that keeps theatening to run down :-)
There wasn't an empty seat in the Great Hall of the Conservatoire for Sir Andras, either - and it's a barn to fill :) I had to leave an hour after the official program concluded - but he might even still be there playing encores still?