Elon Musk may have been the guest of honor at 's Person of the Year event but make no mistake about it, the spotlight belonged to his 1-year-old son, X Æ A-Xii.The SpaceX and Tesla chief got upstaged Monday when he decided to bring up onstage his and Grimes' son for the event held in his honor. The baby boy wore a pair of jeans and a cute sweater of tractor and road drawings.
