Sony's Project Morpheus has only been public for a few months, and without the wealth of community projects that Oculus has, its demos have been thin. Today, though, the company finally showed off something undeniably fun. The "Street Luge" tech demo is like a roller coaster that you control, dodging and turning by tilting the headset. If you've got a low couch or beanbag chair, which Sony kindly provided for us, the movement feels natural, though you quickly realize that you don't need to shift your entire body weight and just start twitching your head. We've seen a growing ecosystem around virtual reality at E3 this year, and while we still know basically nothing about when Morpheus will come out, the journey towards release is slowly getting more exciting.