The collision left more than a mangled vehicle and a scarred street; it carved a permanent fault line through dozens of ordinary lives. Investigators now move through that fault line with deliberate care, testing mechanical systems, reviewing medical histories, and mapping every scrape and fracture against the laws of physics. Each emerging fact inches them closer to a narrative, but never to restoration. Families sit through briefings that feel both too technical and not specific enough, straining to hear some meaning in words like “sequence,” “failure,” and “impact.”