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Combination of "car" and "sonar" describing the act of finding your car in a large parking lot by repeatedly pressing the lock or unlock button on your keychain. Navigating your way around the parking lot by the relative increase or decrease in the loudness of the car beep is similar to the way that dolphins and bats use sound waves to navigate.
Without cardar I would still be walking around in a circle at Disney World.
by Ae5Ea8 March 09, 2015
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