I did Melbourne to Sydney 7 hrs one day 3 hrs the next and then the return 5 days later with a 3yr old and 1 yr old and my mum. I don't like DVD players in cars as would prefer them to sleep so we armed ourselves with CD audiobooks from library, and story podcasts (BBC has great interactive ones), the stories are not so bad as just kids music. But for less drive you mad kids music 'They might be giants' have a few good kids ones. They slept listened and did I spy (well DD did) and we just stopped whenever seemed appropriate. Mine both will sleep just due to boredom in car, (just like I did) and I think is a great skill to have so aim to foster that as long as possible. I get car sick if try do anything but drive in car, so I haven't tried books or toys etc, but the dropping of them puts me off (have done 4 hr drives on own with them and if on own dropped things a real pain :-))