Magnetic Motors - The end of gasoline?

Excllent points all, gents.

As for the fridge magnet, remember that force is not the same thing as energy. While a rock sitting on top of something is applying force, it does not have the ability to do work, which is the definition of energy. Once a rock is done rolling down a hill or a magnet has completed it path to being attracted to another pole, it has finished doing its work. In order to switch the pole, move the magnet back to start or the rock to the top of the hill, you have to put more engergy back into the environment. Sadly, entropy demands that every time you do this you will loose a little. 3-cheers to doubters and inventors, but *something* has to be providing energy to the environment to "reset" the magnets in the process. Anyone who can find one, single crack in the laws of conservation of matter/energy or entopy will be so rich they can actually afford one of those hemi-mopers we all drool over! -LY