Check out this cool gif of the Mustang changing over time generation to generation. Its cool to see it change so gradually. And the 2015 model is included in the gif as well. Follow the link to see more gifs of other cars, like the Accord, Corvette, and 3-series.
Decades of Corvette, Mustang, 3 Series and Accord Evolution Served as Delicious GIFs - autoevolution