Joy Ride has been wiped as cleanly as possible from Xbox.com. Its game page is missing, and even the link to it from MS's E3 page has been removed. Joystiq contacted Microsoft for clarification and a spokesperson responded, "We're excited to bring BigPark's vision to life in 2010. However, we have nothing further to announce at this time." We followed up, specifically asking if "BigPark's vision" was still Joy Ride, if the game was currently in development and if it'd be shown at E3. The company has yet to respond to the request for clarification.
The latest on Joy Ride's status after it missed its 2009 launch was that it was going to be released sometime in 2010. Microsoft purchased Joy Ride developer BigPark last year and announced the kart racer with Avatar support at E3 2009. We'll update if Microsoft decides to let us see what's going on under the hood.