The act of driving home before the effects of consumed alcohol start to set in (e.g.: you're not drunk yet, but if you don't get home quick, you're fucked).
Dude 1: "Dude, what happened to you at the party last night? You sure took off quick, did you get home OK?"
Dude 2: "Yeah, I had to race the beer home. Another twenty minutes and I'd have been blitzed."