I'm interested in this, although I'd need to save a few hundred per year in order to make the privacy issues worthwhile.
On privacy, I'm of mixed feelings. I don't like it when this data is collected -- even if the data collector has good policies, a data breach can instantly make it public (and this happens A LOT). On the other hand, my whereabouts habits etc are fairly easy to obtain anyways. I carry a cell pone, so att, apple, and who know who else can definitely figure out where I am, where I've been, and how fast I'm getting there. I would be very surprised if one of those three letter government agencies didn't track it somehow (maybe not directly, but easily obtainable).
Edit: I signed up for beta testing in CA, free device with reporting features. But since not subscribing to the insurance, I can remove the device whenever I want (I'll try a couple trips). I actually bought one of those obdii or whatever interfaces 10 years ago but was always too lazy to set up a dedicated laptop in my car
I'm a bit worried about it running down my battery. Any experiences? There's no reason it would have to be on when the car is off, but I know some such devices have in fact been reported to be a drain