Pernell has substance abuse issues. He has gotten numerous DUIs, which is why he has to walk everywhere. Fighters are a different breed. It's funny to me when people are shocked when pro fighters get in trouble for fighting, substance abuse, domestic abuse...etc. They have aggressive, impulsive and "thrill seeking" personalities. Pernell is a really good guy, just has some issues (like we all do, just most of us are lucky to not be famous and have those issues looked at under a magnifying glass).