We stumbled on this video of a Zero MX on "Ghost Lake".  Now, other than the fact that it just looks like a blast, you should know that the poster, Ryan Biffard, is the same Ryan Biffard that is the Director of Powertrain Engineering at Zero - AKA the guy who pretty much designed the motor for the new line of Zero bikes (notably the 2014 motor/controller combo).  You can see more fun videos on his Google+ page, here.