Gravity Hills

I wanted to see other peoples take on gravity hills. I know of one my father showed me as a kid that is somewhere in Northern Mi. (Not the Mystery spot) I am hoping to make a trip up there soon to record any data. I plan on taking video, a compass, and laser level. Any other ideas? I do remember the car rolling up the hill, so I will do my best to figure it out.
Thanks
Angie

OK, I found this hill. I went with my camera and compass. I messed up my digital compass by putting new batteries in and not calibrating it right. So, that was a bust. I did get some photos and video of my car rolling uphill. The level verifies that this is uphill. A rubber ball would not roll up the hill.
I want to go back with an EMF detector. Would a mixed up magnetic field show up on an EMF detector?

HELLO ANGIE, MAYBE THE NEXT TIME YOU HEAD OUT THAT WAY, IF YOU FEEL LIKE SOME COMPANY, I WOULD LIKE TO SEE THIS SITE FOR MY SELF. MANY OTHERS WHOM HAVE NEVER BEEN THEIR......STATE BECAUSE THEY READ IT ONLINE SOME WHERE THAT IT IS AN OPTICAL ILLUSION, WHY BOTHER WASTING YOUR TIME.... I MYSELF WOULD LIKE TO FORM MY OWN OPINION AND SEE IT FOR MYSELF. I LIVE NEAR BY AND WOULD LIKE TO WORK WITH SOMEONE WHO HAS TRIED TO DEBUNK IT ON THEIR OWN. I OF COURSE WILL ALSO TRY TO DEBUNK IT AS WELL. LET ME KNOW.

I finally found a way to get the video onto the computer. It isnt my best photography, but you can get a feel for what it was like. I am still going to go back soon.

http://www.youtube.com/watch?v=rpIrboxgLdE