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I guess the rationale is that you can look at it later, even if you can't answer the phone right now. One of my sons told me that it is good, if you don't want to get into a long conservation with someone, only want to get the message to them. But as to why we need it, I think it is just another gimmick that we are being sold by the phone company, just another, "gotta have"!
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.