Q&A: Baby dislikes the car seat

Q: I have a 2-month-old son who really dislikes being in his car seat. He cries inconsolably during car rides. I have tried talking soothingly to him, singing and offering a pacifier. When able, I have sat in the backseat with him and this works best. But most of the time when we're in the car, I am driving and there isn't another person who can sit back there with my son. It's heart-breaking to hear him cry and cry. Short of buying ear plugs, do you have any ideas?