Discription of Events: Driving over 100mph in a 55, overtaking on the grass, overtaking on the shoulder, crossing a double yellow line at an intersection, not letting other vehicles overtake him. Another vehicle was in the process of switching lanes with its turn signal on, and the reckless driver rushed in to not let that car into the left lane nearly causing a wreck. The other vehicle was already halfway inside the selected lane. I was overtaken by this vehicle on a double yellow line. I frequently caught up with him in traffic. This event happened on August 24, 2023 at around 7:00am-7:30am. It started on US-17ALT Cottageville Highway and ran its course through 642 Dorchester Rd. The driver was a male with a cap. The windows were very dark so I did not catch any other facial features.