If you have a full car driving license, you can ride a motorcycle or motor-driven cycle up to 125cc in some countries, including the United States and the United Kingdom. However, in the US, this may vary by state, and in the UK, you need to have completed your Compulsory Basic Training (CBT) first. In some states in the US, you may be able to ride a motorcycle up to 125cc without passing a test or obtaining a special license. Its important to check the specific laws and regulations in your country or state before riding a motorcycle with a car license.