Lab 9: XNA Driving Game
    
       - You're going to make a driving game from scratch.
 
       - In later labs, you'll plug in the physics, but today
           the goal is to get it working.
 
       - Start XNA and make a new Windows Game application. Compile
           it and run to get the blank page. (1 pt)
 
       - Put in a racetrack background.(2 pts)
 
       - Put in a car with a 2D position. (I initially used 
           a bmp.) This was by far the hardest thing for me to do on
           this lab. I
           eventually did a help search on ".fx" and found How to:
           Create and Apply Custom Effects, to make a shaded cube.(1 pt)
 
       - Add keyboard input for up, down, left and right.(2 pts)
 
       - Make sure it stays on the track.(2 pt)
 
       - Use an orientation vector for the lines.  Change orientation
           with left and right.  Forward (and backward) now depend on
           orientation. (1 pt)
 
       - Replace the bmp with lines.(1 pt)