Re: Evidence == "Invasion of Privacy!"
It all depends on who is in control of the images, doesn't it. If they're taken with a camera which is an integral part of a car owned by an individual, I can't see any reason why the images are not the property of that individual, and the only way one could be made to cough them up is by a requirement of a court to produce evidence. I will not be buying or driving a car which uploads imagery to any second or third party without both my permission and my positive action to make it happen.
As far as the privacy on the street notion goes, one has no expectation of privacy on the street. Many cars already have dash cams, although maybe fewer in the UK than elsewhere. All in all, I think they're a Good ThingTM, because the imagery they capture is not, for the time being at least, being borged into some Big Brother database. Hell. I really hope that the Home Secretary doesn't read these comments.