I have a hard time getting DS two into his car seat and feel like I am constantly wrestling him. But once he is in his car seat, he is fine for a long time. Even on long car trips. He doesn't make a peep for the most part, and almost always sleeps on longer trips. My older son who is generally pretty active and very talkative is also pretty mellow in the car. This is a good thing since we live in a city that is a driving city and has terrible traffic. We spent quite a bit of time in the car.