Speed Spies "It is the ultimate back seat driver. Motorists face having their cars fitted with a 'spy' device that stops speeding.
The satellite-based system will monitor the speed limit and apply the brakes or cut out the accelerator if the driver tries to exceed it. A government-funded trial has concluded that the scheme promotes safer driving.
Drivers in London could be among the first to have the 'speed spy' devices fitted. They would be offered a discount on the congestion charge if they use the system."
And what do we get if we submit to daily drug and alcohol tests? Cheaper gas? (more)