ANYONE with common sense knows that if you need to pee that bad, you pull over on the side of the road (safely of course) and do a right front tire safety check kneeling down or yet another reason to have a large empy Gatorade bottle laying around in the car:thumbsup:
As far as pooping, my one (pre teen at the time) use to drive me up the wall with that. Leave the house driving and 5 minitues later he tells me he has to take a #2

Think we finally got through to him about planning to use the bathroom BEFORE we leave as I don't remember him having that problem for some time now (particularly since he wants his driving hours in).
As for adults having that issue on a short drive, no clue what the solution is.