I would think that the re-direction of magnetic fields would make some magnetic wheel inventions truly function. Personally, I would like to see the results of shielding on bar magnets, overlapping bar magnets, rods with partial or complete coverage of their circumference, end cap or partial end cap coverage and cylinders with the same techniques applied. If I have missed the groups discussion on this topic...I apologize...I am new here...please direct me to archive of the subject. Am I wrong to think that the answers to a lot of these designs lies in this knowledge?