The other day, I had put lanolin on a dry spot on Corryn's forehead right before we left to go somewhere. Dillon asked me what it was & I told her it was lanolin. Corryn started fussing while we were in the car, so I said "Oh, what's wrong Corryn?"
Dillon said "Maybe she doesn't like having a greasy forehead!"
Now I know why Corryn fusses in the car seat. It isn't the straps or the not being held. It's the lanolin.