If you are a gray-haired or perhaps salt-and-pepper business traveler, you'll remember the days when Hertz, Avis, and, to a lesser extent, National had a lock on the in-airport rental car real estate. Your options were simple and convenient if not premium-priced. Now Budget, Thrifty, Dollar, Alamo, and even the suburban stalwart Enterprise have wiggled their way into airports across the country.READ»
