Continuity mistake: When the mannequin is hit it's on the double yellow lines with another mannequin stood on the lines behind the first one. When the 4x4 drives off, the second mannequin has moved on its own from the double yellow line to the side with the other 2 upright male mannequins. (00:00:45)
Continuity mistake: At the start, Otto hits the mannequin straight forward. Camera changes and now the mannequin is to the side of the 4x4. After the mannequin is hit, the woman looks out of her side window to look at it. However when we see the 4x4 drive off the mannequin is now on the opposite side. (00:00:50)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.