Special death message if anyone was wondering, "Driver, who was drunk and wasn't wearing a seatbelt, drove into a tree and died! Don't drink and drive!"
Mechanics testing: If Driver is Drunked (not if it drives away drunking though), the Driver has a kill attempt made against it -- this is stopped by docs, vests, etc etc. A unique death message will be shown, and the driver's actions will not go through (due to drunk roleblock).
Wow, just read the wiki and you'll understand him. Driver is one of the strongest mafia roles out, and is a blast to play. He can drive around bg and doc protection, redirect kills, inspection results, and stir up trouble in the morning with claims of cops inspecting themselves and "why wasn't doc on cop u moron" +K :)