OBD III is the really scary one. Anyone who is curious can Google it.
Imagine getting an "ecology" ticket because your check engine light is on. A sensor on the side of the road detects it (ecause it broadcasts everything, including your speed) as you drive by and you will get a ticket in the mail.
That, plus the highway Nazis in California are still intent on wiring in kill switches in all late model cars to prevent high speed pursuits. I can't wait to see the unintended consequences from that baby.