Mackenzie Shirilla was 17 when prosecutors say she intentionally drove her car at nearly 100 mph into a brick building in July 2022, killing her boyfriend, Dominic Russo, and their friend, Davion Flanagan. The "Hell on Wheels" teen was later convicted on multiple murder and assault charges and sentenced to 15 years to life in prison. A viral new documentary about her case has the internet divided: did she really mean to kill them? Court TV's Vinnie Politan Investigates.