I’ve been trying to learn more about programmable dcc sound cards and am starting to really understand how they could work out. This morning I found this website:
The above image is a link to their website and their listing of downloadable traction sound effects (scroll to the bottom of the page). So with enough tracks on the sound card you could really develop a neat sounding car. Everything from the compressors charging and the doors opening and closing to the bells and whistles. Man that would be cool.