This sad, haunting story from 2008 never stops being fascinating. A set of twins were both gripped by otherwise-unexplained bursts of dangerously erratic behavior after being questioned roadside by the police, and it was caught on camera by a documentary videographer.
WARNING: These videos contain footage which some viewers may find upsetting. Viewer discretion is advised.
There's a whole 50-minute documentary about the story of these women called "Madness in the Fast Lane." You can watch it on YouTube.