Street parking. So, when you return the car you will have to find street parking as near as possible. It is usually not a problem on Montrose, Junior Terrace, and Marine drive to find parking. The only time it is hard to find parking is after 8:30 or 9pm.
Please make sure to return the car to a spot that has no street sweeping / no parking for at least 24 hours after the end of your trip.