FrumJewDL said:
I will put on a diaper before a long car drive. But because I can't pee while sitting, certainly nit while driving, I will often return home with a dry diaper.
Your mission, should you choose to accept it, is to wet your diaper while driving!
Seriously, just practice at it. Get to where you can go while sitting in a chair at home. Then move on to sitting in the parked and stopped car when you get home. Then in the idling car in your driveway.
From there I had difficulty. So for the next step I took the same back route home every night. A road I could stop at with the car in gear, and start going. At the beginning I'd take
forever to start, and would slam shut when I took my foot off the brake, but I was out of sight of anyone that might question me there, so I could take my time and keep repeating the process until I had wet several times and my bladder finally said "no more, go home!" I eventually got to where I could go through that route and slow to a stop, start going, and then carefully drive off and be empty by the time I got to my house. Took about 3 weeks to pass that challenge.
Then get started and wet as much as possible at a (preferably
long) red light. Work at this until you can continue as you depart the red light.
At this point I
still find wetting while driving a little challenging, but I set a "red lights are
cheating" rule, and can start and end my business while in motion though often requiring effort if I'm not too full.
Just keep at it. A shy bladder is a stubborn thing but you
can overcome it. And it will benefit you in other areas, like if you have problems using a public restroom. (as I once did)