Discription of Events: White male with long goatee.. Tailgating me for one mile.. I slowed down and had on my turn signal to stick near my husband driving next to me. Man cuts off my husband and tailgates closer almost hitting my equinox with myself and one year old. I slow until he passes me and he starts screaming and throwing his hands up at me. He gets next to my car getting extremely close. I speed up and he gets behind me again. I signal and get into left lane. He follows me so I get back in the right.. My husband speeds up and gets between the males truck and mine. Man speeds up and gets off on 31st st on 235 interstate. I was extremely scared and started dialing 911 until he got off the exit..