DS is basically potty trained but has a bladder the size of a walnut and waits until he's bursting to tell me he needs a pee. He regularly has pee accidents because he doesn't have great awareness when he needs to go (or he's just not bothered). DH thinks we will be able to just find a place to stop and let him go. I think it will end in tears, Piss on his seat or even a car crash. last time we tried this he screamed because he had to go so bad and DH took ages to find a safe place to stop which was very, very stressful for everyone.
what do you do on long journeys with your almost potty trained dcs?