Reversed tracks: 
There are 4 tracks in each country. Beat the record of
a track to unlock the next one. Unlock all of them to 
access the four reversed tracks for that country.

Level 2 license: 
Win the 2.0L championship twice to unlock the Level 2
license.

Level 3 license: 
Win the 2.0L championship 4 times to unlock the 
Level 3 license.