Drink driving underwent a social change because of a concerted propaganda campaign. It morphed from something that drivers bragged about - "my car went home on autopilot last night" - to something to be ashamed of. That helps but shame is different from guilt (guilt in the personal rather than legal sense) in that shame is the result of a social misdemeanor and something that you would still do if there is a reasonable chance of not being found out, whereas guilt is the consequence of doing something that troubles your own conscience regardless of being found out. Drink driving unfortunately still accounts for far too many casualties.I mean, it's not like drink driving, where you could safely guess that most people never do it