Discription of Events: I got caught in the wrong lane, slowed down, put my blinker on and moved over when space was available. The driver behind me did not like this and went around me, then his passenger threw a full water bottle at our car, denting it and scaring my infant, before he sped off. The driver was a male appearing to be in his 30s; the passenger was a blonde female also appearing to be in 30s.