Circles on the field and other formations. Mexico

Salvador Villanueva, a taxi driver, was trying to repair his broken down car out in the country when he was joined by two pleasant looking men 4.5 ft tall, wearing one piece gray corduroy garments covering even their feet, with wide shiny belts. They had metal collars, and small black shiny boxes on the back of their necks, & carried football type helmets under their arms. As it was raining, he invited them to shelter in the car, where a conversation with one of them was conducted all night. The spokesperson eventually told him they were from another planet, which Villanueva scarcely believed. He accompanied them to their craft, noticing that the mud puddles did not wet their feet, and that their belts glowed whenever the mud was repelled. The UFO looked like 2 soup plates joined at the rim, with a shallow dome with portholes, & rested on three spheres. He was invited in, but refused. Glowing white, the vessel zigzagged upwards, and then shot up vertically, with only a faint whistling sound. A 40-foot circle of broken down bushes was found at the spot.