according to the calculator above, I can have 3 import beers in 1 hour and have a BAC of (only) .04.
no chance in hell I can drive after that. and don't get me wrong, I can drink like a fish. but beer puts me down, and fast.
even if it's right and I'm only 'half drunk', I know myself well enough to know that aint gonna fly.

I think such a device will only back up people that are unsure and give them a false sense of capability.

if I'm 50% drunk and I run someone over, they're still gonna be 100% dead.