XPost: rec.arts.sf.written, rec.arts.sf.science   
   From: proto@panix.com   
      
   In article ,   
    David DeLaney  wrote:   
      
   > Fairly clear, because while that is the case, it's also a lot harder to keep   
   > a watch out in 4\pi of spherical directions than it is in 360 degrees of   
   > planar ones; you can't build roads in the air; and if you have a problem in   
   > mid-air, despite what Bugs Bunny demonstrated, you cannot simply put on your   
   > air brakes and stop dead while you try to fix it or wait for help. Plus   
   > drunken   
   > teenagers or adults make all of this so much worse...   
   >   
   > Dave   
      
   Keeping track of local cars, for that there is radar. Probably   
   everyone will be under remote control and there may be chosen pathways   
   you must follow. Flying manually inside city limits could easily   
   become an organ bank offense.   
      
   --   
   Never attribute to stupidity that which can be explained by greed. Me.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)