Read the fine print on those `convenience fees` from the toll collection device in rental cars
(LA Times Books)

Question: I recently rented a car at the airport in Albany, N.Y. It came with a toll device. I did not want to use it; I wanted to pay at the booth. And I did except for one time when the device flipped open by itself. When I went to pay at the booth, the attendant told me I had already paid. I...