10 'Back to the Future II' Inventions We STILL Don't Have

It's October 21, 2015, the day Mart McFly landed in 26 years ago in Back to the Future II. While we do have some of the cool stuff that the movie promised us, there's still plenty of technology that science has failed to deliver. 

1. 3D Hologram movie billboards

C'mon, you know you wish that there was a 3D billboard of the new Star Wars movie to jump right out at you. 

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from CollegeHumor: Pictures http://ift.tt/1LF4PUN