Windows 3.1 says:
Just curious, but since air-time isn't counted is a seven second drop from a GP track to a platform legal?
Ville says:
Air doesn't count as a surface, you can have a 50-second jump in your track if you want to place one somewhere
Space says:
you can do it of course, but don't hope for much theme points
EnaiSiaion says:
You can't transition from platform to tunnel without having a one block roadmain in between... sorry.