I got inspired by the pitchrising sound as the engine of a New York subway train revs up.
I tuned it to concert pitch and build a track around it using the usual Spectrasonics suspects (RMX,Trilogy and Omnisphere) and additional drums from EZdrummer/Jazz Expansion.

I found perfect visuals in the Prellinger archives and combine dboth to a little clip that i call
In Transit

Please enjoy