Oh sure there are plenty of people who are guilty and have a problem, they get caught too, but the courts want money so they aren't just going after the problem, they are charging any and every person possible. Some people get charged DUIs for annoying a cop or being tired, and even if their blood work comes up clean, do they drop the case? No. They just argue they were high on some other drug that they didn't test for.
I hate to say this, but how about... not drinking and driving? Drunk driving is a massive problem in the US and accounts for a good proportion of all driving fatalities. And your attitude sounds precisely like what causes this issue: unless the penalties are painful, people keep trying their luck in hopes of blowing "exactly the limit".
> your criticism is pretty off-base
In my experience, and the experience of my friends, that criticism was spot-fucking-on. Once you get into the system, you'll be lucky to ever truly get out. Every step is designed to keep you paying into the system in perpetuity unless you walk a very, very thin tightrope. Anyone that thinks we rehab our criminals is pretty off-base.
If the people of the country were more constitution minded, they would want a punishment that fits the crime, and no additional punishment on top of it. So I share this gripe, even though I consider DUI a very serious crime (including those who do it and don't get caught).
Consider guns. A felon cannot be in possession of guns legally, and the doctrine of constructive possession means that a prohibited person can be charged with unlawful possession of a firearm if a lawful owner in a household leaves a gun accessible to the prohibited person.
Perhaps it should be a serious crime for a convicted drunk driver to be in or around a car where the ignition device could be in the prohibited person's possession.
My technological ideas were along those lines. Basically allowing them to continue to own their automobile, but not to drive, and perhaps not to buy one, because forcing them to sell their cars is hard to implement (though maybe worth it). And also preventing them from operating cars owned by other people that are stored in their residence or workplace.