Car Seat Drama

Mason used to LOVE sitting in his car as a newborn and up until early last month. For some reason,the past month he has decided he hated the car seat. Now, EVERY.SINGLE.TIME we are in the car he cries and cries. No matter what we do, he wants to cry until he is OUT of his car seat. I've tried reading to him, singing to him, driving with the window down, holding his hand and NONE of it works. I hope it's just a phase that passes quick!