We are in that afternoon thunderstorm time of the year where we are treated to very dark and ominous clouds that cloak the Rockies in a curtain of uncertainty.  Then 20 minutes later it's clear again.  You would think that a city that deals with 42 inches of snow annually would be full of expert drivers when a small amount of rain falls.  I'm not talking about the vehicles you see here.  I'm talking about the drivers on I-25 heading north towards Denver.  Traffic slows to a stop and 40 minutes later when you get to the bottle-neck, there is no apparent cause to the frustration.  I bet if someone would do a study they would find that 70% of traffic slowdowns were caused by an event that clears two hours prior and is no longer in play Did you know that 62.3% of all statistics are made up on the spot?