I was driving from Oberlin, OH to Kent, OH. I took I-480 E. I typically drive this route as I have an internship in Cleveland so I always look around the sky for planes flying into Cleveland-Hopkins Airport. All was normal then a few miles past the airport I was driving minding my own business at this point..something in the sky to my left caught my eye. I looked over and a glowing white orb zoomed in a straight line path before completely disappearing (going dark). I am a pilot and was well aware of the meteorological conditions (VMC). Relatively clear sky, few clouds. This thing moved faster than any aircraft I have witnessed, especially at such a low altitude. Winds were not much of a factor today so ground speed most likely did not play a factor. I also noticed only the white light, no NAV lights whatsoever...I would estimate an altitude of somewhere between 4000-8000 feet. Law requires 250 kts (IAS) or less below 10,000 FT. This was no plane, I know them too well.