Car in front might have waved them through, seeing as it was a group of cyclist. I am sure your blood pressure meds kept you from blowing an artery seeing how you were so terribly inconvenienced.

Take another pill and try to contain yourself. I guess if the car had not been infront of you you would have run them down. Since they took your 'right of way' and all...they would be deserving of getting run over...