The cameras are a *great* thing, and I actually think it's time for legislation/regulation (boo, hiss, yeah, I know) requiring that all rental car companies do that if they want to collect "damages" for all but the most obvious crash damage. No more of "this tiny scratch that you need special light to see wasn't noted before, so you have to pay $800 to fix it" -- let them provide timestamped pictures/video of the actual car w/license plate, and you driving it, leaving the lot clearly showing the part claimed to be damaged in good condition, next to the timestamped checkin pictures showing it damaged. If it's not clear from that, then there's no justification for charging. Good for the company and the consumer IMO.

I still take my own walkaround video of the car on my cellphone when I pick it up (and return if unattended), pointing out scuffs/scrapes/dents/dings. If at a typical airport location, I usually don't go back and make them add minor stuff to the forms (I do if it's a slimy city location of a company famous for nit-picking), but I have it in case someone later claims there is new damage.