To rent a car you will need international driver’s license and the "credit card". Driver's age must be at least 21 years with 1 year driving experience. Rules of the road are standard and the majority of destination signs are in Georgian and English languages. Rent a car is little expensive: the basic model will be asked to USD 100 per day, while insurance is not always included. As an option - you can negotiate with the taxi driver about the "buying" his services in the day.