CollegeHumor has posted a cartoon showing what might have happened if Doc Brown brought Marty McFly to the 2015 we know instead of the 2015 from Back to the Future Part II.
No Mr. Fusion, carbon emissions, no flying cars, terrorists, Crocs, drug use in baseball, dying print media, no hoverboards, Oxboards, Vine, online bullying… Needless to say, the movie might not have been quite as fun…