If your car is a recent model, it probably has a "black box" -- similar to the event recorders found in planes. The feds are now talking about requiring them in all cars and light trucks and that has some critics concerned.
John Bowman at the National Motorists Association says drivers should have the option to remove or disable it.
"...Could be taken without the drivers' knowledge so, certainly there are privacy concerns."
Bowman says that data can be used against you in court.
"The data does in fact come up routinely in court cases for lawsuits and insurance purposes and things like that."
Privacy advocates worry the government can collect that data and use it for all sorts of unknown purposes.