Gas cap locks it down great. Simply write the directions on, done with trip, chuck it and make a new one. The bar pad I found is a great stash for getting to bills and toll tickets quick. Still thinking of a way to have change easily accessable so I'm not fumbling in my pockets when I pull up to pay. Change ideas anyone Hmmm, might of just thoought of a cheap good one, I think, will have to look.