LO is 2 months old and we have the Chicco Keyfit. We don't drive that often bc we live in the city but when I try to take him out in the seat w/ the stroller and when he is in the car he eventually breaks down into the most intense scream-cry he has. I feel so bad but I don't know what to do. I've checked the straps repeatedly to make sure they are not too tight and that are fine.

Anyone else have this problem? How did you deal/help LO?