I can't believe the possibility of Sunset Overdrive being a contender hasn't come up. The game looks like a breath of fresh air (and you can't even see air so I guess that's why no one has mentioned it).
Author of science fiction and other genres, I write under the pen name Desmond Shepherd. The second season of my series The Permanent Man premieres on November 11, 2014. Pre-order the season premiere The Walls Have Ears on Amazon today!