Matt Everingham of the California Space Authority was kind enough to provide a link for this news group to get more info regarding the Lunar Regolith Challenge :
formatting link
A brief decscription:"Like last year, teams will be required to build autonomous excavators, but new this year is a requirement that the excavators be mobile and navigate their way through obstacles. This change requires that the teams address some of the obstructions and other operational constraints likely to be encountered on the lunar surface"
Sounds like robots to me! Dig in, Sign up, Plan for next year !