Apparently some long-lost relative of mine who goes by the handle Celtic Kane created an online blood alcohol calculator that's become quite popular in the past few days.
The calculator is linked here via Digg's annoying new toolbar thingie that also rose to prominence in the past week, or if you are boycotting that, here at CelticKane.com.
I see one problem: you have to be on a computer to use it. If you're not sure whether you're too drunk to drive, you probably shouldn't be online either. That could result in an unfortunate email getting sent out or a Facebook status getting changed that will prove embarassing tomorrow.
However, as an iPhone app? Genius.
(Sorry for the generic photo above, but if you really want to stop yourself from driving drunk, do a Google image search for "drinking and driving." The only lighthearted photo that came up was also creepy, it was a little boy drinking while on a toy motorcycle, but it was from a website of some 8-year-old kid whose parents chronicle his life online including a long list of high-resolution photos.)
Related:
Drunk Teenagers Have No Respect For the Dead, Other Drunk People