Originally Posted by
iahphx
As a follow up, while the service was much slower than I typically get at National, I had no problems adding my 20-year-old daughter to a USAA-coded rental at a city Hertz location. I can't explain why AutoSlash DID have a problem with this, but there's certainly some confusion at Hertz about how the USAA code works for underage drivers.
It may have been because my daughter was only 18 and your daughter was 20, but not 100% sure.