I would say its all about practice to pee while driving, its similar to trying to bed wet?, just practice and practice ^^ and you will be enable to do it
i can a do it without any bigger problem but still
ofc you can wear a diaper all day without leaks but it all depends on how much you pee as previous people wrote dont pee to much and it wont be a problem, pee to much= huge problem
Why do you only got UK and not Europe? i live in Sweden and i guess there are lots of sweds visiting here also so and other parts of Europe,
could you make one for Europe or Sweden?