A scooter was found near the victim’s body. A witness said that the victim, who appeared to be a woman in her 20s, fell from her scooter when it got caught in the streetcar track as she navigated around a bus. A white pickup truck ran over her and was stopped by police a few blocks away, the witness said. Angela, an Italian tourist waiting near the Powell St. cable car turnaround, also said the victim appeared to be a woman in her 20s. A San Francisco police officer examines a helmet found on Market Street near a woman who was killed Friday in a collision.