I drive a car with automatic as well. When my left leg was very badly injured I was advised not to drive as I would be presumed to be at fault in an accident.
I called my lawyer. A good, ole Texan. He said that if I had anything of value that could be gotten in a law suit, not to drive.
I didn't drive until I was well into recovery and the PT people cleared me to do so.
Your decision has to be based on how much risk you can handle.