Got boring after the third "lap", gets old really fast. Its not really a "Race" when no one can get halfway without dieing 12 times.
Also, something must be done about Track 2's long ramps. Because they are made out of a bunch of small ramps, you tend to bounce and when you are required to jump on them. Well, forget. That's just not gonna work. I hate it when the games kill you when its not your fault, this one included.
You should make another where you cant die and where it depends on whether or not you turn corners and hit jumps correctly. Kind of like Wario Stadium for Mario Cart.