Valleys and Railways

Just had a thought for the level design. I really like the idea of using a narrow valley with steep hills and tight bends. Was also thinking about having a massive hill in the leek which the car will go down and hopefully pick up some nice speed! Maybe at the end of the level, if the player is still Close to the rest of the pack of racers this downhill Strecth would be fun and exciting fast paced run! Another main feature I would like to put into the level would be a massive viaduct or railway crossing over the whole valley, this may be the key recognisable feature of the level.