June 17, 2009 12:28 pm Gravity Hill What goes up must not always come down? Rumors have it that there exists a “Gravity Hill’ in Washington state where cars roll uphill. Local 1:36 O.J. Simpson's cause of death revealed 2:36 Super dad makes Mario-themed obstacle course for son's birthday 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:59 Ellen DeGeneres jokes about being ‘kicked out of show business' 0:59 Paramedic involved in Elijah McClain's death sentenced to 4 years of probation