Except for hidden characters, you cant really spoil it.
Also there is a steering wheel controller.
As far as I can tell there are 16 retro and 16 new maps. The retro maps this time are redone, some with a few new changes.
Mushroom Cup:
Luigi circuit
 a simple straight foward race track
Moo Moo Meadows
 a windy road with wandering cows
Mushroom Gorge
 a country side track thats main features is a chasm with large mushrooms sticking out.
Toads Factory
 A factory with conveyor belts, mud, and moving platforms. One of the trickiest new courses
Flower Cup:
Mario Circuit
 a short track with a great straightaway for wheelies, a testy chain chomp, and a very long drift
 to the finish line
Coconut Mall
 Multiple paths, wide open spaces, and moving escalators make this mall a unique race track. Miis
 walk by in the background
DK Summit
 A challenging Downhill course with a long series of halfpipe-style boost ramps.
Wario's Gold Mine
 A punishing roller coaster ride with few gaurdrails to keep you on course
Those are the 8 new tracks we know of.
Oh and theworm, You CAN hop if autodrift mode is turned off.
