Many of the rental companies offer several special equipment extras that include GPS satnav, baby seats, child seats, and disabled hand controls. You can usually arrange outside-office-hours help at an additional cost. If you want more than one driver to be allowed to drive the car, this can usually be added for a nominal fee as well. There is usually an option to return your rental to a different location than the pickup place for an additional cost depending on the distance. Search rental cars on KAYAK