This is one underappreciated game! This is probably one of my favorite games!!! READ ON WHY!!
The second mode is another race mode except that instead of a first person mode, you can see the whole small track and all the enemies and yourself. It's called Top Ride(because the camera is at the top) I think. It's like REALLY unique because there are traps and such on the track.
The third mode is the coolest mode to my oppinion. It is just like a free run in a huge city full of powerups, secret, hazards, and enemies. You have like a 5 minutes or more(you can decide i think) to get maximum powerups and you vehicle of choice. During that, there is going to be an awesome event happening. (ex. meteors falling down, catching a thief, some powerups are deadly, machines are out of control, etc.) At the end you must compete in A FINAL CHALLENGE!!!(not really) You have to either race, derby, fly, target practice or stuff like that with all your enemies, which is where all your powerups are worth it.
There are a lot of different vehicles you can get in, including a glide star(in which you can fly forever), a scooter, a huge motorcycle, an evil wing and many more including King Deedeedee, and the awesome Meta Knight!!!