I shall remain sceptical on the subject of magnet motors, unless somebody shows me at least a theoretical design(a rough sketch would do).
Some people claim that there's no 'nuclear waste' to worry about, that it can be reused. I don't see how it could be done. When the spent fuel is reprocessed, it means removing the neutron absorbing 'poisons' from it so that the remaining fuel can be put back to work. There's no real recycling there.
Furthermore, while you might extract some of the fission's byproducts(which is costly on it's own), the majority of these radioactive isotopes cannot be used for futher fission, as they do not emit any more neutrons, instead decaying through beta and gamma radiation. Also, I don't see how medicine or scientific research could use up all these mass produced isotopes(and what happens to them anyway, when, say, your hospital doesn't need them anymore?).
Then, there's the irradiation of plant's stucture(concrete, coolant, protective clothing etc.) that has to be disposed of periodicaly with no conceivable way of recycling.
Now, I do think that the nuclear power is the best solution to energy problem, but one cannot go from one extreme(enviromentalist crazies) to another, completely discarding the problems it presents.
Personally, I don't see that much problem with storing the waste underground. Bury it, mark the place and stay away from it, what's so difficult there?