How to extend my permission to stay in Cuba?
Visa can be given for 30 days; after this time if you want to extend this time you most address to the immigration offices before its expiration and apply for the extension of your VISA.
How can i rent a car?
It´s possible to rent a car at the airport at your arrival or by internet. Several agencies provide the service and the cost goes from economic to luxury, also from a model to another and according to the time you require. You will find gas station all over the country. To apply you need your passport and driver license.