I always like making sure I am ready for anything! I always pack a ton of food when I am on long car rides. 
I used to do the same thing when I went on long trips.  I would also bring extra things like blankets if it was winter.
Me too!! I also started wearing disposable underwear so I don't have to make any pit stops. I love being ready for anything. 
You're so lucky!  I would do the same, except they don't make them in my size.