I think it would be really cool to have cars driving without visible license plates. They would just look better that way. Not to mention if the car is in an accident we could automatically record the plate to track down hit and run drivers. Usually a pedestrian or cyclist that is hit isn't able to see and memorize the plate. A lot of people in California already have radio transponders for toll roads, this wouldn't be much different than that anyhow.

Then again though, there are plenty of horrible things you could do with this tech too. Mostly, it is the same as what they are already doing with plate readers. Tracking the innocent and guilty alike...