It's Hill Valley meets Liberty city in 'Grand Theft Auto IV: Hill Valley Edition.' This was put together by a fan of both 'Back to the Future' and 'Grand Theft Auto IV' and it looks really badass. If only this was easily available to the rest of us.

Apparently, you if you have GTA IV for PC, and you're a technical wizard -- you can add this modification to your game. Unfortunately, it sounds way too hard for any of us at the Banana to pull off. Check out Marty McFly as he tears through the streets of Liberty City/Hill Valley, showing off the DeLorean's capabilities (which does include legit time travel). I wonder if there is a mission where you run Biff Tannen's car into a manure truck?