It's a good question. I feel I'd check out other resources first. Are you in a rural or urban area? Is there other transparent--like taxis, or Uber, or Lyft? If so, I'd try one out. If urban and pleasant, a good bus system is a great help. Also, in some places there are free senior lift services--usually for medical appointments and food shopping. Personally, I'd investigate so I wasn't totally depending on the family. And then try a mix of things. From your note, I don't get the impression that you are strongly hoping to keep driving. I don't think it is a matter of age so much as feeling ok behind the wheel. What would you prefer?