Discription of Events: Grey Sentra Nissan driving very fast in street traffic on Hillsdale Blvd with his window down flipping everyone off at the same time. Ran 2 stop signs and a red light. The Grey Nissan was weaving through traffic. One of the stop signs the Nissan ran into me and almost pushed me into ongoing traffic. Then changed his lane to get onto to the 101 freeway.