The black boxes don't concern me, especially since various automakers have been using them for a while now. After the rigamarole Toyota went through when people forgot how to use a shift lever and a brake pedal, it's likely most, if not all, of them were headed that direction anyway. A $20 data recording device seems like a cheap way to avoid Senate hearings and a large drop in sales the next time three or four drivers all get stupid in the same manner within a week or two of each other.
What's bothersome is who will have access to the data, and for what reasons. After-the fact crash data analysis? Fine. Data dumps when pulled over for some "infraction"? Not fine at all. And even more troubling is that this is not going to go through the vote and veto process since it will be deemed a "regulation" instead of a "law", though these things pretty much carry the same legal weight. Never mind that the data collected from the devices we're forced to have by regulation might then be used to throw the law at you.