I looked a five different cruisers yesterday and one had an interesting spot of cancer that i thought i would ask the body here to evaluate. sorry i didn't think to take pics. the left corner of the roof above the driver and where the windshield meets the roof had pretty bad cancer. overall the truck was a clean example and had been taken care at the mother dealership. it was a 2000 lx 470 with aprox 150k. what would cause this rust???