There have been plenty of attempts to make a fully-rolling device, but perhaps [Derek Lieber] has a better take on it by turning a spherical robot into a two-wheeled roller by the addition of a ...

Some of the main attractions will be the two Hot Wheels roller coasters - 'Bone Shaker: The Ultimate Ride' and 'Twin Mill Racer.' Alongside a life-size Barbie Beach House with a rooftop restaurant ...