Can you drive a Reliant Robin when your 16 without suppervising driver with you?

No, you cannot drive a Reliant Robin (or any other car) when you are 16 years old without a supervising driver in most places. The legal driving age is typically 16 or 17, but even then, it usually requires a learner's permit and supervision from a licensed driver. The type of vehicle makes no difference to the legal driving age and supervision requirements.