Despite being one of the last rural interurban systems there’s little video of the Illinois Terminal railroad on Youtube - but I found this on Facebook :

https://www.facebook.com/bob.kalal.3/videos/10208028792556898/

It’s a contrast to the high frequency inter city operation of the North Shore Line, and more representative of the “typical” midwestern interurban.

They still manage to pile on the speed though.

Tony G