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"On August 1st, Nissan Japan will begin joint testing with authorities on a new system which prevents drivers from starting their cars if they've been drinking. The technology, which we mentioned back in 2006, can disable the vehicle's ignition after analyzing a driver's level of intoxication using an onboard breathalyzer. The tests will take place with cars used by local government staff in a variety of Prefectures around Japan, utilizing the opinions of the drivers to further develop the system. The company recently added a \"Carwings\" navigation system to its vehicles, which issues warnings to drivers under the influence, and the automaker hopes that technologies such as these could halve the number of serious accidents involving Nissan vehicles by 2015. [Warning: subscription required]"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2007/07/23/nissan-begins-testing-drunk-proof-car/>