The UFO stopped over the interstate, and all of the cars driving slowed down. Many had on their dome lights so we could see each other. Also there were small groups of cars huddled together for safety I guess. Then the UFO lights began to move. The red light remained stationary as the flashing white light slowly moved counter-clockwise. Then stopped when they were flashing straight up from the red light. Then they moved clockwise back to their original position and continued past the horizontal position until they were flashing straight down from the red light. Then back up the original horizontal position. Cars on the Interstate were moving VERY slowly now. It moved north across the Interstate for maybe a minute and then in the blink of an eye it ascended traveling north. The Des Moines Register had an article the next day, or maybe two days later, and joked that all the people that had called reporting this UFO, were seeing Santa Claus.   NOTE: The above image is real from Duarte California.