Dont click on this ebay link if you are on a limited download as a Youtube video loads automatically.
It does however sound quite feasible given that magnets do repulse and a motor works in much the same way.
Ill do a nutshell if you dont want to click the link.Picture a cylinder on a spindle. With permanent magnets in lines at a diagonal.A bar of magnets with the same polarisation is brought near and the repulsion causes the cylinder to spin. MMmmmmmm!!!!