nothing about the guy being at any bar. and some people hold their liquor "well"  they can be blotto, walking, talking,  navigating  just fine - sober enough from all appearances.  you wouldn't look at him twice - behind the wheel he's just sloppy or sleepy or gets aggressive.  
 i know there are too many deaths from impaired drivers - really tragic stories.    i have a friend who did time for vehicular homicide: he was stinkin drunk, a macho guy who would never let on he was TOO drunk. he was sentenced to the maximum amount of time and is out now.  he has such remorse for killing the young lady..he's been suicidal - we've gone up cougar reservoir looking for him if he was late back from one of his solitary camping trips. the wreck was about 12 years ago and it's still on his mind always.  he does know what he did - he does know his stupidiness caused a young person to lose her life. double tragedy as part of him died there also. he doesn't exist in the moment now. he's always "there"