Yes that is aluminum and it is the same principle of an induction 3 phase motor accept flattened out. I am just interested in this concept based on lenz law and the aluminum works for this even though it is not magnetic it is conductive so copper works better but aluminum is cheaper. Tesla cars run on induction motors and I like the idea of creating a track out of aluminum kind of like a rollercoaster. I am not sure on the efficiency or anything but I would think its pretty good since tesla cars use this concept.