Okay, so I'm all for cracking down on driving while intoxicated, a friend of my dad's was killed by a drunk driver. However, I was wondering the other day... what if you're at a party and you're not drinking or have maybe only had one alcoholic drink, but someone slips some form of drug/narcotic into your drink before you leave to go home and as you're driving you start to feel the effects and are pulled over. If it is discovered that you do in fact have drugs in your system but you were completely unaware of it and couldn't tell at the time you got in your car, are you still held responsible? My initial thought would be yes simply because I am sure officers have heard that excuse a million times before. But are there any extreme extenuating circumstances for leniency?