Young, female driver of this vehicle was driving erratically. I was in the far left lane about to take an exit. This driver was in the far right lane. She began moving to the left and crossing over two lanes before entering my lane. This driver was not stopping and nearly swiped the front, passenger side of my car with the rear end of her car. I laid on my horn but she kept coming over, barely missing my car!! I had to swerve to the left and brake to avoid an accident! The driver of the white Lexus kept driving and didnt stop