It should be remembered that GPS is a one way system. The receiver in the car will be able to use GPS to determine its precise location, but then it must consult an on-board map to determine the speed limit. At no time is the location of the car transmitted to the satellite, which means there is no worry of the government tracking you.
Having said all that I don't think I'd be too happy with it installed in any car I drive - for the very same reason I don't like automatic transmissions, traction control or any thing else that makes the car do something I didn't tell it to.
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It should be remembered that GPS is a one way system. The receiver in the car will be able to use GPS to determine its precise location, but then it must consult an on-board map to determine the speed limit. At no time is the location of the car transmitted to the satellite, which means there is no worry of the government tracking you.
Having said all that I don't think I'd be too happy with it installed in any car I drive - for the very same reason I don't like automatic transmissions, traction control or any thing else that makes the car do something I didn't tell it to.