It couldn't be the BEST in-game roller coaster builder ever, but it would still be useful. :3
Heck, I think I'm gonna try to make it.
@TheArmyGuy: No, no, no, that's now what I'm saying at all. I'm talking about Bricks that have a roller coaster track shape to them, and they have alike properties as the Space Mods-Conveyor Belt/Water Rapids. The vehicle wouldn't be following the track, it would be propelled.