Discounts & SalesRental Cars Earn A Free Rental With National Car Rental’s “One Two Free” Promotion by joeheg August 27, 2018 by joeheg August 27, 2018 National Car Rental’s “One Two Free” promotion is back for 2018. I wrote about this promotion last year and many of the basics haven’t changed much since then. In short, … 0 FacebookTwitterPinterestEmail