http://www.forbes.com/sites/alexknapp/2011/11/10/next-mars-rover-is-prepared-for-launch/
"The primary mission of the Rover is to examine the Martian surface for signs that portion of it are habitable now by life, or were habitable in the past. NASA made very clear that this isn’t a mission to find life on Mars, but is rather an attempt to determine the best places to look for life."
well a draw I would say!