We're doing the trek to see my folks next week and slightly dreading it after the nightmare 8 hour journey last time 
Dd is 8 months and certainly let's you know if she's not happy! Ds, 3.4, is easy in comparison but he starts screaming when his sister won't stop crying. Stopping makes no difference, she just starts again when we set off. It's hell on earth in our car!
Any magic tips? Please!