The DUI/suspended license issue is really interesting to me. After i returned to College in 2009 I worked in a convenience store in Montana, and the number of people driving in and buying beer with no drivers licenses (used state issued ID cards) was huge. How do you stop those convicted DUI drivers from just driving sans license? The disincentives are clearly not strong enough, and while I am pretty much against locking them all behind bars, it may be the only way to keep multiply convicted DUI drivers from driving is to lock them up for the length of time they lose their licenses for.
EDIT oh yes, they drive sober after they lose their licenses also, and thats gotta stop too.