Arif Khokar wrote:  "2. If not #1, could he not use the roughly 20 seconds to   
   decide to speed up just a little bit to open up a gap and come in ahead of me   
   like I originally thought he was going to?   
      
   Could some other posters in this group shed some light on that other "   
      
   Peoples' depth perception varies greatly, along with their perception of   
   closing speed between the approaching vehicle(yours in your case) and theirs.   
      
   This leads to their spending excessive time trying to judge how quickly you   
   are bearing down on them, and not exerting enough pressure on their   
   accelerator pedal to merge smoothly and safely in front of you with time and   
   room to spare.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)