Hush

Tired and irritable, Zakes Abbott drives home along the motorway, his girlfriend, Beth, asleep beside him. Failing to spot his exit he speeds across the causeway and barely avoids an accident. Apoplectic with rage, the truck driver gives chase, and as he violently overtakes the tailgate flips up revealing a woman bound and bloodied in the back. But before there is time for a second look, the door is slammed shut and Zakes is left bewildered and wondering if what he saw was real. (imdb)