Whats it for?
data recorder.
camera,
gps
speed
shows exactly how your car has been driven
I know how my car has been driven, and how its going to be driven, and it isnt going to be driven by any grease monkeys from the local ranch.
What other benefits are there? If it could detect radar as well it might be worth having
Have a read through the website. ... http://www.roadhawk.co.uk/ it can be setup to record like the Monaro set it when it record the 'test drive' but there's also the abilty to to set it up to record a set time before an accident. It can prove what happened before an accident occured ..... which hopefully is in your favour (if not you can then delete the SD card ).
Deleting the data wouldn't be sufficient, you'd have to blow the card completely (and probably follow that up with blowing the recording devices internal memory that kept the log of you removing a perfectly functioning card and replacing it with a shagged one).
I can't believe the number of people that think, that pressing the delete button, gets rid of data for ever.
All that happens when you press delete, is the file system allocates that as free space, the data is still there until its over written, even then its partially recoverable.
Only 100% way to remove data, is to physically destroy the device its on. SD? Fire. Hard Disk? Drill holes in it, then take a hammer to it.