Cell phone users drive like old folks
 

The study found that when 18- to 25-year-olds were placed in a driving simulator and talked on a cellular phone, they reacted to brake lights from a car in front of them as slowly as 65- to 74-year-olds who were not using a cell phone.

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Yeah, and yet they don't ban use of cell phones when driving in most places. Convenience over being practical...