Re: I despair
Why rely on what a "car" is telling you? A car that can easily be co-opted into telling lies.
Why not use independent sensors that "see" what's really there?
We screwed up that part too, by 'hacking' the sensors with covers on traffic signs, and hand-drawn car lane trap (a nice circle with doted lines on the outer side, the smart car can enter but can never exit).