http://offers.hertzgold.com/Htz_no1club.aspx?offerid=11904&langcode=enFrom their site:
They say no. Hertz says go. We're happy to announce our new policy of renting to 20-year-olds. As an added bonus, 20–24-year-olds can rent from Hertz without paying a Young Renter fee, now through September 30, 2011. That means you'll save $15 to $25 per day, depending on car class.
Save up to $25 per day: PC# 157474