Challenges list of GreenYoshi
fast as gasoline
Ribbon Raceway : Complete the track in less than 30s in VS mode, in 500cc class
Easy
slow as gasoline
Ribbon Raceway : Complete the track in less than 1666666:40 in VS mode, in 10cc class
Easy
still slow as gasoline
Ribbon Raceway : Finish in the 1st position in 5cc class, in VS mode, with Bowser
Easy