The woman driving this vehicle on an early Wednesday morning was extremely reckless. Both lanes were congested, and traffic was heavier than usual this morning. I noticed a blue mini was driving quite close behind me as well as the woman driving making hand gestures and trying to get around me, which was not possible as the traffic was quite heavy in both lanes. Cars were driving at about 40-50 mph, but everyone was quite close to each other, and slowing down abruptly was common as well. This went on for a few miles until a break in the lane next to me opened up and she snuck in quickly. She then got on the side of me and I could see she was yelling. She then flipped me off and proceeded to swerve into my lane to either hit me or drive me off the road. I had to slam on my brakes and swerve a little off the road. There was absolutely no need for this behavior and it is extremely dangerous on any day, but especially on a day with more traffic.