This is an old dodge come back...
I once read a sci fi story about a future in which the general IQ had become so low that people were their own worst enemies. The cars in this future had two features to make it SEEM as if they were going very fast: an amplified engine roar, and fans that blew air back into the driver's face, imitating a ferocious slip-stream.
Since people THOUGHT they were going dangerously fast already, though they weren't even out of the parking lot, they did not have any temptation to increase their speed. They would "roar" down the road at twenty miles an hour, and then have to recover from the adrenaline rush of it.
This is kind of the FAUX Noise approach to road safety.
So now we are half way there. All that's left now is to install the fans...
