I thought we should have a new thread on this so here goes.
It was mentioned in the MB thread that ODB II has been abused.
I am shure alot of the general public is not aware that OBD II records all systems in a 30 sec loop until a event, Such as airbag deployment.
G.M. Claimed this was for corporate use to protect them lawsuits, (people claiming faulty airbags or some other system falure caused a accedent). Yet the factory rep I spoke with a few years ago made it clear this info was available to LEO.