On Formula D/ Formule Dé, one's speed is determined by the dices you use. The Sixth dice, allows one player to move to a maximum of 30 spaces. This is the greatest dice available. Formula D/Formule Dé uses the same "tracks" as one can use any tracks of any given edition, it'd work freely.
I'm wondering which tracks has the longest straight line, in order to use this sixth dice.