http://www.gamewad.com/gta-iv-will-use-cars-trunks-3668-p.html
"Press LB to open trunk." That's what a pop-up command told Official Xbox Magazine as a Rockstar representative approached a vehicle from the rear while demoing the game. It sounds like a great addition to the game, considering how useful car trunks have proven to be in the world of organized (and disorganized) crime.
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