I was dirivng from Pleasanton to Foster City to drop off a gift for my moms friend whos in town for awhile. I took the 580 West to the San Mateo Bridge. I borrowed one of our Fastrak passes from our LandRover and took the Fastrak lane at the toll. My FasTrak didnt beep nor did the light go up saying "Valid, Etc" or w/e. Now, every car except mine in my house has a Fastrak. I heard they take pictures in these situations. What do you think I should do? Should I maybe expect a fine? Or should I email them tonight about the situation?