In May 2008, two women ran into oncoming traffic on the M6, the busiest highway in England. They were forty-year-old identical twins, Sabina and Ursula Eriksson. Despite being hit by a car, Sabina attacked a police officer and ran into traffic again before being sedated by paramedics.
Source: YouTube
What followed was an even more bizarre sequence of events that ended in madness and murder. When investigated, Sabina and Ursula’s behavior was attributed to folie à deux (the folly of two). This rare psychiatric condition manifests in hallucinations or delusions that are shared or transmitted between two individuals.