because only national lets you choose any car in the aisle... and go. you can even take a full-size or above, and still pay the mid-size price. (aaron) purrrft. (vo) meee-ow, business pro. meee-ow. go national. go like a pro. fby eating healthier, drinking plenty of water, but still not getting relief? try dulcolax laxative tablets. dulcolax is comfort-coated for gentle, over-night relief. dulcolax. predictable over-night