* Turns out there wasn't any issue with the speed transition code; seems to be something with the buttons when the orientation changes
* Switching speeds after changing the layout wasn't working because we needed to update MainActivity's mGLView member variable
* Updated TODO to reflect the change
* Lined up the cars with the texture
* Updated TODO to reflect this change
* Consolidated some constants into final variables
* Doubled the distance to the far plane to accomodate the increased size of the cars