What happens with tolls and tickets after you've returned the car.
Many rental companies use electronic tolling systems tied to the vehicle, billing your card automatically after the trip, sometimes with an added administrative fee on top of the toll itself. Traffic violations, including speeding or parking tickets, are typically forwarded to the renter as well, often with a delay of weeks or months.
Keeping your rental agreement and receipts for a while after your trip is worth it in case a toll or ticket charge appears later and needs to be reconciled.