I was out running yesterday, thinking about Race Yourself, the defunct AR Google Glass app company I briefly joined in 2013 where you run against your own avatar to improve performance. I was wondering when that sort of AR might be a reality, then this led my thoughts onto the area of VR.It seems more promising  judging by the amount of recent funding raised, and the explosion of startups building the ecosystem including the biggies like Jaunt, and Occulus.