News bites: A good or bad deal?

Your morning transportation speed-read:

Analysts are debating whether Avis's acquisition of ZipCar is good or bad for fans of the car-sharing service.

New Jersey Gov. Chris Christie (R) defended his state's transit authority's handling of rail-car storage as he lambasted lawmakers for delaying approval of a relief package for Hurricane Sandy damage.  

The Transportation Security Administration (TSA) says it found 1,500 guns during its checks of airline passengers in 2012.

A US Airways airplane was clipped by a Spirit Airlines plane at Florida's Fort Lauderdale-Hollywood International airport. 

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