In fact, the entire game, as well as local multiplayer and even online multiplayer, can be played in augmented reality mode, with seamless switching back to the standard game. (mobilesyrup.com)
If you want to be as immersed as possible, you can use the virtual reality mode. (engadget.com)
The headsets are optional; you can ride in the classic reality mode if desired. (orlandosentinel.com)