Do you Promise?

Mackenzie ran away from home. Then got hit by a car. That happened to be a '67 cherry black Chevy Impala. Then her life changesd. She meets two quirky eccentric brothers, Sam and Dean Winchester, and gets thrown into thier world faster than a hot tomali. But Sam and Dean secretly, or not so secretly it seems, have pretty much, the hots for her. Who will she pick if anyone at all? How's she gonna cope with that while everything else, including the world, is crumbling?

Here's my Disclaimer: Supernatural belongs to Eric Kripke.
Yeah, he's not me...
Oh yeah, and this is also called a FAN FICTION, okay people?
LUVS YA, ENJOY THE STORY! <3