It would be nice of some of the "cashless" tolls follow the same procedure as Illinois for missed tolls. I have gone through several tolls in the Chicago area without my own E-ZPass or a PlatePass from the rental agency, and the tollway gives you a 7-day grace period to pay the toll online without surcharges. You just type in the vehicle's license plate number and pay with a credit card. Works beautifully. And no surcharges from the rental company.