Some things just seem to go together: popcorn and the movies, a hot dog at the ball park, loud music while cruising down the interstate at 2am...
It seems that some feel that alcohol and caffeine go together:
Caffeine addicts are toasting Anheuser-Busch's latest invention â€” a beer infused with caffeine, guarana and ginseng. The new beer, BE (pronounced B to the E) has 59mg. of caffeine for each 10 oz. can. To put that in perspective, a can of Red Bull has 80 mg and an 8 oz. coffee has averages about 110 mg. Is adding caffeine to beer or other alcoholic beverages a good thing? We contacted several sleep experts and no one could state any benefit. Some expressed concern that adding caffeine might keep a person awake and drinking more instead of falling asleep or passing out. An added concern is that the caffeine might give a person a false sense of confidence and encourage drunk driving
From the National Sleep Foundation