Is it really too far to walk to the bathroom at a rest area?

Shortly after I had my prostate removed I was driving the car home from Detroit on back roads when I got that urge. I knew there was a small park with pit toilets and I made it there. The walls go down to about 2' from the ground so there is a lot of ventilation. I was in the proper place but there was so much wind that day that it didn't go down but blew up all over me. I knew it was mine but I sure took a good shower as soon as I got home and threw all the clothes into the washer.