I've got bi polar. On a combination of drugs (risperidone-sertraline) and when I get a funny turn "manic high, pshycotic low, I get a stay in hospital untill I'm square, and I'd never even think about driving when I ain't square. To me, what you are explaining is even worse. The guy obviously needs help but don't realise....you would be doing him a favour by getting him hauled in and helped. It's up to you to get him help