MADD Outdated and Dense

I was reading Drunk Driving: Rail vs. Jail by Warren Redlich in which he writes:

The truth is that criminal enforcement does not work adequately as a deterrent.

Many people continue drinking and driving. Humans have had problems with alcohol for thousands of years. Combine that with the fact that alternatives to driving are inadequate in most of the US, and it's not surprising that the problem has not gone away.

As a nation we spend billions on DWI enforcement. This includes police salaries and equipment, prosecutors, court staff, jails, probation officers and more. Those billions would be better spent on increased mass transit, which would provide a genuine alternative to driving.

Why do we as a nation keep banging our heads against a brick wall. Are we that dense? I watched tv news last night and watched as a soccer mom was arrested for a dwi after an afternoon meeting with other moms at a neighborhood lounge.  She did not appear drunk at all and talked cohently.  No kids were involved at all.  

She barely went over the Misssouri limit and was guilty of only taking an afternoon off to get together with her friends but now she is in jail and has to suffer the humiliation of it all.  She said when she left the lounge she did not think she'd had enough wine to be  a dui.  But she did.  

Is it just me or doesn't all this MADD tight ass enforcement go too far.

MADD Outdated and Dense