Sometimes it seems like DIA doesn't want anyone to leave. Is there some kind of strange force field that sucks the juice from car batteries, flattens tires and disguises vehicles parked in the sprawling economy lots and distant car-parks, rendering their owners powerless to drive far, far away? Perhaps -- but it's no match for the good people at AMPCO System Parking, who scour the premises for infirm autos and offer gratis jump-starts, lock-out assistance, tire inflation and guidance for the hopelessly lost. Armed with a license-plate number, they can locate a car for the weary traveler who's just

plumb forgot where he parked it. AMPCO's attentive employees don't accept tips, so be sure to at least smile and wave as you pull out and motor on.