A sample of this motor:
[https://www.youtube.com/watch?v=LXBYMiNH1nE](https://www.youtube.com/watch?v=LXBYMiNH1nE)
In: 87
Energy = force * distance. If you have two magnets attracting each other, you can get a little energy out by letting them move towards each other, but then you’d have to put that same energy right back in to move them away from each other, plus any energy that went to useful work, friction, and other losses.
At best you’re making an energy storage device, but not a very good one compared to a flywheel or battery.
tl;dr: the magnets push just as much slowing you down as they do speeding you up.
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