This also happend to me on slex last saturday, a white crosswind was on the fast lane at 60 kph. I was behind him waiting for him to turn right to another lane. Suddenly a red crv instantly makes " tutok" to my back endlessly flashing and honking. Finally crosswind merged right and in to me being picon i sped to 120 kph because no one was in front of me. It ended with the crv being very far away from me.