Buckle up, because when Zach Galifianakis is driving, you might be in for one crazy ride in “Due Date,” in theaters tomorrow.

From confrontations with drug dealers to being flipped off of an interstate, Ethan Tremblay (Galifianakis) is just plain bad for the health of anyone unlucky enough to tag along. It certainly wasn’t Peter Highman’s (Robert Downey Jr.) choice to travel with someone he “detest(s)at a cellular level.”

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