(perhaps that is it then, if a circling c-130 electronics warfare
   aircraft
   can siphon up all signals in a given geography else satellite overhead
   and access all Vehicle IDs to target and track. thanks for the info)
   [1]dan@geer.org> wrote:

      > about the V2V cars- what is the likelihood that automobiles are
     _not
      > tagged in some way, just like computers, given that location or
     other
      > data is critically important and perhaps more easily accessible
     or
      > tracked outside of a particular environment...
     If you have a newish car, it has a radio in every tire's valve stem.
     If I know the radio signature of your car, then my roadside bomb
     will only miss you if you aren't in the vehicle that day.  And that
     is putting aside all the other wireless goo new cars come with, and
     the embedded systems some (many) of which can reach that wireless
     goo, and the fact that people pay to be tracked (OnStar), and the
     mountain of data that the OBDI (On Board Diagnostic Interface) holds
     including the VIN, and the hundred startups vying to get their plug
     in your OBDI and upload your data to their cloud, and the insurers
     who'll buy your cooperation with monitoring for a few percent off
     the bill, and the spot to plug your mobile into the car's on-board
     net, and the automated gizmo to determine if you're driving drunk
     and kill the engine if you are, and the LED headlamps that can quite
     easily be pulsing data that your eyeballs will never detect, and
     the electric car's battery charger that will double as a software
     (pun) auto-update portal, and the robot that will soon be driving
     for you, like it or not, because by then the State of California,
     et al., will know that robots drive greener than you do, etc., etc.
     Don't buy a model later than 1993...
     --dan

References

   1. mailto:dan@geer.org