My friend drives drunk

[wacki]

I hate to say it but I have a friend that has an incredibly high alcohol tolerance and isn't afraid to drive drunk. One of his relatives and I have tried to get him to stop but he just doesn't listen as he's convinced he can drive well. Yes, I know he's being idiotic. I have to admit he seems to be able to drive pretty well when he's drunk but I want to convince him to stop... or at least limit his driving.

We've thought about buying him a breathalyser but that will only prevent him from driving on the worst of days. Another thing he's actually excited about doing is testing how well he can drive on a driving simulator and compare that to his sober driving. This might give him a good idea what his limits really are. Does anyone here have any suggestions for a computer program that might fit this need well?