A few years back in Canada I heard of a study that looked at people who talk on their phones.  It concluded that people on their phones were so distracted that the chance of them causing an accident was not far off the odds of a drunk causing an accident.

I was sitting in a bar with a few qataris last month, and the were having more than their fair share of drinks.  pretty sure they were driving home on their own. 

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"Even a stopped clock gives the right time twice a day." Withnail & I