Uhhh.....Tooner, darling, I have not weighed in on this yet, so let me relieve myself of these thoughts.
First, and foremost: When you gotta go, YOU GOTTA GO!
Holding it too long (while lifting and carrying) is unhealthy.
ALWAYS clean out your car! (every day)
I agree with first leaving the urine bottle on the dash so everyone sees it. If it happens again, DLN, HazMat responder, etc. This will get back to the center manager, and it will stop.
OK, thats out of my system! Such relief! Ahhhhhhhhhhhhhh!