Next now we turn to a story that has riveted people across the country. People in a dangerous situation on a highway. We're talking about the motorcycle group that swarmed the car with a family... See More
Next now we turn to a story that has riveted people across the country. People in a dangerous situation on a highway. We're talking about the motorcycle group that swarmed the car with a family inside. We showed you the harrowing video. Tonight we have more about the real terror behind those pictures. Reporter: This helmet cam captured horrible events and we've learned this biker is facing serious charges for cutting off an suv and causing on accident. The driver stops. Police say what's not caught on camera, some of the bikers slashing his tire. He makes a break, running over 32-year-old biker edwin miasas. He's paralyzed from the spine down. It was broken in two places and there is no hope for that as well. Reporter: The bikers then chased the suv three miles up the highway. Then this. We know where and how it ended but what the video doesn't show it how it all began. Police say they're now investigating the driver's conduct. Should he have waited for the police? I think there is no easy answer. You have to use common sense. Obviously if you can get out of there that's what we advise you to do. Reporter: Last year the same group called hollywood stunts invaded times square posting videos on youtube. Under no circumstances do we condone any violence, hate or any riding that can harm pedestrians or riders. chris McNeil is a professional stunt rider who got his start on the street. 99 percent of the participants on these rides aren't going to be breaking the law. You really can't judge the actions -- everybody on the actions of a handful of riders. Reporter: But as this video shows, a few bad actors can lead to serious consequences. Linzie janis, abc news, new york.
This transcript has been automatically generated and may not be 100% accurate.