bean, all i have to say is, guys, never postition yourself between a woman who has to pee and a bathroom! It is a danger zone. And when she says "we need to stop for tourist information" (my mother in laws euphonism) you better stop.
(this is the real reason Rhu and his wife won rally races. they would stop at pubs, rhu would have a pint, and the misses a cuppa, and off they would go again.. a scant 20 minutes after a cup a tea, she had to go again, and finding the next pub, and fast, was very important! she would put the pedal to the metal, and zip round those narrow, curving roads! Rhu thought she was rally racing, in reality, she was intent on spending a penny!)