Would be cool Worlds First, Heres another one for you to think about, how about a coaster with floorless Cars, which has both normal and inverted track, and at random points of the ride the track switches from below you to above you and Vice-versa, i think that would be trippy, suddenly the track disapears from under your feet straight into a vertical loop then to suddenly come back and into a cobra roll, that would be my next dream coaster :--D