Too drunk to drive? Ask your phone.

i- Phone Application

I ran across this interesting i-Phone application offered through Avvo. The aptly named Last Call application let's users estimate their blood-alcohol level before deciding whether or not to get behind the wheel. You basically log your consumption while you drink and the application estimates your alcohol level. You can even use the application to call a cab or get a list of top local DUI lawyers provided by Avvo, to call for help if you need it. Now if it only had an application that would prevent you from calling an ex at 4 in the morning.

http://www.avvo.com/personal-portable-breathalyzer.html