Traveling west on edmound rd,near saddlebrooke. noticed bright yellow/red glowing light from a vehicle at ~800 ft. moving s to n.Size of glow ~30-50ft.Got out of car to watch as it passed overhead. it continued going n at approx 50 mph. there was no noise from an engine of any kind! i've been in aerospace work for over 60 years and never witnessed such an event. previous ufo sighting was on dual radar pickups during a gca landing in england in 1954.