agreed. >> justine winter's car encroached into the northbound lane striking mrs. thompson's vehicle. >> but what evidence was there that justine had done it, as the law says, purposefully? investigators pulled the so-called black box out of justine's pontiac, analyzed the data, and found another sign that pointed to suicide. she had taken off her seat belt. the black box also recorded speed, acceleration, and braking and found that justine was accelerating, flooring it so to speak, in the five seconds before the crash, speeding up from 81 to 86 miles an hour before hitting the brakes at the last second. >> she did not swerve. and she drove head-on into that other vehicle. >> to back it up, prosecutors pulled the speedometer from