Transcript for Ex-Uber driver tries to blame app for deadly rampage
We move on to the interrogation video of an Uber driver who went on a deadly rampage killed six people in 2016. The video has never been broadcast before and our chief national correspondent Matt Gutman talked to some of the survivors, good morning. Reporter: Good morning. That video shows Jason Dalton offering up a defense that shocked the nation. Dalton had lived a completely middle class life in Michigan but now he told detectives that the devil in the Uber app took control over him and commanded him to rain eight hours of terror on Kalamazoo. I'm not a killer and this is what -- and I know that I have killed. Reporter: You're watching never before seen video of Uber driver Jason Dalton being interviewed by police. Explaining why he's just gone on a murderous rampage killing six people and severely wounding two others because he said his Uber app made him do it. I know that you guys are going to have a hard time believing this, but it literally took over mind and body. The Uber app? Yes. It was red when I first started. I switched from red to black. When it's in that black mode it literally has control of you. I wasn't believing any of it, but if it's something that is going to make him talk, you're not going to want to shut him down. Reporter: Before February 20th, 2016 Jason Dalton seemed like any ordinary family man in Kalamazoo, Michigan, a man who just started to drive for Uber to pick up extra cash for a vacation but that date at 4:21 in the amp he starts an eight-hour rain of terror picking up his ride driver Matt melon. As he's going 75 miles an hour. Swerving in and out of traffic. We were going so fast we blew right through this. At one point I even thought about hitting him. Basically I was planning out random houses. There's my friend's house. Finally he like slammed on his brakes. Reporter: Melon has no idea how lucky he is. Right afterwards Dalton heads home. Puts on a bulletproof vest and picks up this Glock semiautomatic. Back on the road he drives past Tiana Carruthers and he comes back and opens fire. I told the girls, run, no matter what, you run and do not come back. I tried to get under a car but then when I realized if I just keep moving, if I just keep moving, if I just keep moving, then he just continued to shoot. So I pretended that I was dead, and I just kept telling myself, god, you're going to make it. You have no other choice. You're going to make it. And I just kept telling myself I hope the children are ay. Lord please, I can never forgive myself. Just make sure that they're okay. Physically blocked some of those bullets from where those E going. Yes. And one of those children were hurt, I don't think I could bear a child losing their life. Would I do it all over again? Hell, yeah, I'd do it again. Some real strength there. We saw the interrogation video. The driver blaming it on the app and have investigators been able to figure out anything more. They have no idea why he did this. We won't know more because there's not going to be a trial. Jason Dalton this month was sentenced to life in prison without parole. He pleaded guilty. Dropped the insanity plea partly because his mother told him to do it but I'm pretty convinced at some point he was convinced Uber app told him to do something. I think he believed it. Just crazy. Matt Gutman, thanks so much. A lot more tonight on "20/20."
This transcript has been automatically generated and may not be 100% accurate.