Any National codes with added extra driver?

[peel]

In January my mother and I will be renting a car and we both want the ability to drive it. I've got my $70 Alamo ressie that includes a free added driver but I'd rather use National if possible. Does anyone know of a decent code that includes the extra driver?

 

[K9pal]

Are you a member of National's Emerald Club? If so, a free extra driver is one of the perks. Or, if you are a member of AARP and use their code to book, an additional driver is free also.
Hope this helps!

 

[peel]

I am an Emerald Club member and I didn't realize that was included. Thanks!!

EDIT: I guess in terms of family it only covers spouses or immediate family members who live with you, so my DM can't be added for free. I guess I'm sticking with Alamo.