Oh, it is so stressful to listen to them cry while driving isn't it? I always felt so guilty about it.

My DS2, now 16mnths, cried in the car for the first few months of his life, not every time, but most times. I always got the impression that he just wanted me to hold him. Sometimes DH would drive and I would sit next to DS2 and stroke his body and talk softly to him, and he would still cry. Sometimes he would get really worked up, almost to the point of hysteria. Then I would pull over and get him out. He would usually calm down very quickly once I held him....then i'd have to put him back in again

But he did grow out of it. I can't exactly remember when, but it finally happened! He occasionally cries on long drives if he is really tired but he doesn't become hysterical anymore, and he usually falls asleep eventually.

Good luck!