Meeeee wrote:
I should really get together some MP3s of very loud classical music to
counteract it, either that or develop a portable antinoise generator

I have a CD of Olivier Messiaen organ music kept in the car for just
that reason*. If an XR3i with bowel-worryingly aggressive speakers
pulls up alongside, "music" going "thud, thud, thud" in such a way that
you can hear it from the next county, I just roll back the roof
(Citroen C3 Pluriel) and let M Messiaen do his worst.

I suspect there are probably specific by-laws prohibiting the playing
of Messiaen on trains, though.

Richard

* I do rather like it, as well.