Remember when Jerry Seinfeld pointed out that the car rental company “took” the reservation, but failed to “hold” the reservation? Well those days are over. Hold your very own car rental reservation in the palm of your hand with our handy list of car rental apps for your iPad. Select by model, comparison shop, pay online, and even get delivery. Most providers include insurance and roadside assistance, but there’s no word on what they might do if you leave behind an odor.