A question about wii mario cart?

Question

How do you get more racing tracks or areas to race in?I have 4 but there are ? marks by the other ones?

Answer 1

come in at least 3rd place in the Grand Prix cups.

and you should have started with 16 tracks, not 4.....

Answer 2

then look at whether there are only 6 that these are great prix in each major prix there are 4 tracks osea there are only 24 tracks are unique, and no more

greetings from mexico and I am translating aver yes yes means jeje