The Colorado State Patrol has a couple of special cellular phone numbers reserved to report violations of state law. One of them is *CSP (*277) for aggressive driving.
Could these cyclists have used this number to report this doofus behind the wheel (a Ford Explorer with Colorado plates 893-EKG) in Longmont, Colorado?
The cyclist who posted the video reports this driver stayed behind them cycling slowly for five minutes in spite of long clear sight lines and plenty of passing room. Other drivers passed the Ford to get around it.
The poster says the Colorado State Patrol apparently has received numerous reports on this driver, an older white male.
Via Murph, who grew up near there. I also used to ride those roads when I lived in Longmont.