SAVE BIG, BETTER THE WORLD! Do Good Rental Cars has been formed to pursue a socially beneficial business model. We have negotiated special deeply discounted private rates for rental cars from all the industry's major brands for the same cars and service as they provide to full-price customers. This allows us to offer spectacular rates to a charitable organization's employees, affiliates, members, volunteers and donors while leaving us room to pay 30% of gross profit to support good causes.