
I have this issue with dd2. She is not a long car-ride toddler (which I don't blame her, but its necessary to see my parents). She has earpiercing screams and she is right behind me in the middle of the second row seats. I actually bought a pair of earplugs

There is no reasoning with her. She has 1 sister on each side of her and a brother and sister behind her, nobody can settle her down. Its usually that she wants something. Paci, food, or their gameboys/ds's

She does get cranky when shes overdressed though. Could that be a possibility with your df son? Maybe he is overheated and feeling confined in his carseat? Or the sun in his eyes? That used to bother my dd6 when she was a toddler. She used to tell the sun to get off of her

I sympathize with your friend, not fun trying to drive when your kid is screaming. I have added toys with links onto the carseat too, that seemed to help as did the dvd player and music. Poor older kids get sick of watching Barney and Mickey mouse clubhouse though

Whatever keeps her quiet while Im driving LOL. Earplugs are a godsend though if you gotta let em cry it out.
Maybe a paci would help due to pressure in his ears/ears popping while driving?