Alone

A woman trying to cope with her husband's suicide goes on a road trip all alone. She keeps seeing a man who she thinks is following her almost everywhere. When the man overtakes and zooms ahead and at the same time almost causes the woman to crash, the woman heaves a sigh of relief thinking he wasn't following her. Later, at another destination, the same man approaches her to convey his apologies for overtaking her, causing the woman to sense that something isn't right.