I invite everyone down to the DUI/DWI capital of the country, San Antonio. Drive around here late any weekend night and chances are one out of very three cars is being driven by someone under the influence. Hell, even the cops get busted driving drunk in this town, in their police cruisers (it happened a few months ago). About a year ago, a drunk driver killed several people in a car when she went the wrong way down a road, and it turned out the driver of the second car was drunk as well!
It is not uncommon to see people popped for their second, third or even forth DWI. Hell, my wife sat on a jury for a guy who was on his seventh DUI!
Honestly, it's much easier in Europe when you can walk to the pub/gasthaus and back home; but if you get caught behind the wheel with a BAC over the limit, you should spend time in jail, period. Oh, and Rain, I believe RVs are classified as domiciles if they are not on the road, so "sleeping it off" in one is legal as long as it is not on a public road...