I know a lot of people have read her comment about the bottle in the car seat to mean that she has her 11-week-old drink while she is driving. That could be what she meant but I did not interpret it that way. We used the infant car seats for longer than 11 weeks. They were carriers, they were strollers (on the snap-n-go) and they were car seats. Some times we might leave a toy, a bottle (of expressed milk) or a blanket in the seat while we were holding one of our babies. Sometimes, while the baby slept and the seat was at our feet or on the stroller, we might wedge something in the side (usually by a baby's foot). Since I related her description to my own parenting (though thankfully I have not faced berating from either side of the breastfeeding aisle so did not have her problem), I did not think anything of what she described. However, your warning is well-taken for anyone with an infant.