Your car's black box...

"The National Highway Traffic Safety Administration is expected to announce a new regulation requiring all vehicles to contain a 'black box.' Not only that, but the devices would be designed to make it difficult (possibly illegal) to modify what information these devices collect or to disable them even though the courts have ruled that the owner of the vehicle owns the data. The courts have also ruled that authorities may access that data (to what degree and whether a warrant is necessary depends on the state)."