Perhaps you've been driving on the highway before and have seen a police car barreling by you. Have you ever wondered if they're out to catch a bad guy or whether they're simply being allowed to go a... See More
Perhaps you've been driving on the highway before and have seen a police car barreling by you. Have you ever wondered if they're out to catch a bad guy or whether they're simply being allowed to go a lot faster than you are? Abc's john schriffen tonight with the officers who were caught. Reporter: High speed chases are nothing new, but this one in miami grabbed headlines because the man behind the wheel of that squad car going 120 miles per hour is an offduty officer headed to his second job. He's about to get busted. Put your hands out the window! Reporter: At gun point, florida highway patrol arrested the miami police officer for speeding. Turn around. Turn around. All right! Turn around, right now. Reporter: But after this video went viral, authorities investigated and found the man was habitual offender. Last week, he was fired and charged with reckless driving. This kind of abuse of power may be parodied in movies like "superbad." But it's a lot more common than you think. The two offduty officers in this car were fired after luring a fellow officer into a high speed chase. Doing over 90. Reporter: Laughing hysterically, claiming it was all a prank. In miami, two officers were relieved of duty after careening down a sandy stretch on miami beach, even going airborne. It is a serious problem. Speed kills and it doesn't differentiate between a citizen or a police officer. Reporter: And with that risk to public safety, we've seen more americans demanding action. Those videos are going viral. And public outrage is forcing law enforcement to punish these officers. Citizen forces getting John, thanks to you.
This transcript has been automatically generated and may not be 100% accurate.