Throttle sticking???

Hey guys, Not sure if I just had a freak issue with the throttle or throttle cable sticking on my 318, but as I pulled up to a stop light my Dart kept idling super high as though it was stuck wide open. I shut it off and popped the hood and nothing looked out of the ordinary (I didnt give too deep of a look due to sitting in rush hour traffic).:wack:
I started it and drove off with no further issue.
Was this a stuck throttle or is there anything else I need to check? Not the most comforting feeling.

Thanks,
Clark