You cannot drive into the cemetery but if you go to the visitors center and tell them that you want to visit a graveside they will tell you where it is and where you go to catch the shuttle. They will take you to the section where the grave is and then pick you up when you arr ready.
Start at visitors center. Personnel are very helpful.
Go to the visitors center and you can give your name to one of the aides and they will give you a location within the cemetery. If you're visiting a family member, you're provided a pass to drive through the cemetery as I understand.
Thanks! Your answer is awaiting moderation.