To be honest with the way people are making fraudulent claims lately Ive considered fitting one into my car. If you feel the need to drive like a loon you can always remove the memory card prior to your spirited drive.
No law says you have to have it on. The road hawk also records sound as well,
We have been told that if some one runs up to our trucks to give abuse we should hit the Record and store button so the abuse is recorded.