Zachary Hartwell, 30, has been identified as the passenger who was killed when the car Jackass star Ryan Dunn was driving went off the road, crashed and burst into flames yesterday morning. Hartwell is pictured at right in the photo Dunn posted to Twitter of himself with two friends, drinking at a bar, less than two hours before the accident. Sources who were at the bar with the two men told TMZ that Dunn was driving Hartwell home, and after dropping him off, he’d planned to hang out with another friend. One of Dunn’s drinking buddies revealed that Dunn drank three light beers and downed three shots in four hours. Hartwell is listed as a production assistant on Jackass Number Two and was credited as a car stunt driver in Minghags, the 2009 movie directed by Jackass star Bam Margera.