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Roger, you're most welcomed.
Giantpanda - I concur, the salty slush you get on Canadian roads is probably as bad as it gets, and I should not be complaining about the air we get here.
EJM's link went to an interesting site - it explained how the system works in lay terms and looks like it was written by someone that actually understands the science behind it.
The idea of negatively charging the bodywork to prevent it rusting is interesting. I plan to try a simple (read 'cheap') experiment to see if this actually works.
1) I'll attach two unipolar magnets to a plate of bare mild steel, in such a way that they repel one another with the steel "sandwiched" in between.
2) I'll place the north pole face of each magnet in contact with the metal. (North pole supposedly creates a negative charge). Then I'll either spray this plate with a saline solution or dunk part of it in some salt water and wait a few days.
If it works, there should be no or little corrosion compared to another plate I'll use as the 'control'set, which is simply sprayed with saline or dunked.
When you all stop laughing maybe give it a try yourselves and let's see if it works!
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