Another nail in the coffin...
... of intelligent driving.
"But Constable, I couldn't have been speeding because my car has this clever feature!"
"Were you looking at your speedometer, Sir?"
"Well, no, because my car has this clever feature..."
Or, of course, there's this story about Drivers caught by fake 40mph Speed Limit Signs
PS El Reg, you don't have to be a "petrolhead" to understand that it is *inappropriate* speed for the conditions that is the real danger, so this system will still let you do the National Limit on a road that is wet, dark, socked in by fog, full of traffic etc, which is entirely legal, but incredibly stupid.
We need to *educate* drivers better, not take the decision making process away from them.