What will they come up with next?

Today I heard on the radio that the iPhone has a new application. It's called Last Call. This application calculates your blood alcohol level and tells you if you're over the legal limit to drive. It factors in the number of drinks, what drink you're drinking, and your body weight. After you fill out the information, it will calculate your blood alcohol level. If you are over the legal limit in your state, it will pull up taxi companies in your area so you don't drive. Well, if it keeps drunk drivers off the road...it's a good thing in my eyes. Seriously, what will they come up with next?