Google is patenting a pair of motorized VR roller skates - The Verge
Google patents 'virtual reality footwear' designed to make you feel like you're walking - CNET
Google patents VR rollerskates to stop you bumping into stuff | NextPit
Google patents a pair of motorized VR shoes - Digital Bodies
VR Locomotion Device 'Cybershoes' Kickstarter Triples Funding Goal in First 24 Hours – Road to VR
Google Patents Footwear Technology for VR Experiences – Footwear News
Amazon.com: Google Cardboard,VR Headsets 3D Box Virtual Reality Glasses with Big Clear 3D Optical Lens and Comfortable Head Strap for All 3-6 Inch Smartphones (Yellow, 1 Pack) : Cell Phones & Accessories
Google Is Exploring VR Shoes With Tiny Motorized Wheels