Originally Posted by
AutoSlash
The person can pick up the car if you put it in their name and then they add you as an additional driver. That is the only way to do it, and you both will need to return to the rental counter in order to have you added to the contract as an additional driver.
Agree with this 100%. I had an additional driver on my account and they took it off at the checkout because he wasn't present. They want to see the other person and their ID (even if there is no charge).
You will need to go to a National location (don't think it has to be the one you originally rented from) to add an additional driver.