Chicago DUI attorney comments on tax dollars being spend on in-car alcohol detection devices

This Chicago DUI attorney has posted here about in-car alcohol detection devices becoming standard operating equipment.

Such technology has just gotten a big boost from Congress with your tax money.

From cbsnews.com:

  A debate is raging over an effort to develop technology effectively shutting down cars when alcohol is detected in a driver's bloodstream - with proponents saying it would be an optional tool that will save lives and critics contending that a nanny-state government will use it to keep Americans from driving home after drinking a single beer at a baseball game.

The catalyst is a push by New York Democratic Sen. Charles Schumer to provide $60 million over five years to develop in-vehicle technology that would recognize a driver's blood alcohol concentration. 

The goal is a non-intrusive alcohol level detection system, something that requires virtually no effort (unlike the ignition interlocks imposed on convicted drunk drivers that require breath samples to start a car). While it's too early to know what the technology would look like, it could be anything from a system that can read a finger when it touches a steering wheel to a mechanism that detects the presence of alcohol from a driver's normal breathing.

The senator did say that the device would not be mandatory on all cars.  So anyone else wonder why you would develop such a technology?