NY state legislature debating required use of ignition interlocks on all vehicles by 2009
New technology detects alcohol on skin surface; eliminates need for breathalyzers
MADD endorses requirement for anyone convicted of 1st drunk-driving offense
Critics say 40% of drivers don't drink at all, systems not foolproof, may create distraction
Volvo, Saab in forefront of industry efforts to incorporate interlocks into cars
But think systems should be optional, not standard equipment