Blue-gray glowing object moved very fast and disappeared.On April 10, 2013, my husband and I, in separate cars were driving east on Interstate 10 in Redlands, California. He was about a minute to 90 seconds behind me. The time was about 9:12 p.m. PDT.Despite fairly heavy traffic around me, I noticed a very fast-moving object heading from north to south above the eastern horizon. It was just above treetops from my view. It was not fiery or bright like a meteorite, and it was far too fast to be any kind of aircraft. It glowed enough to be visible, obviously, and was dull blue-gray.The size was very hard to judge, since I don't know how far away it was. Compared to the planets, it was larger than Venus but not bright. It did not leave a trail.Its path was straight. I lost sight of it after perhaps 3 or 4 seconds.My husband had a clearer view from a higher point on the freeway. He observed the object for 4 to 5 seconds before it disappeared on the horizon. His impression of it was exactly the same as mine, the dull gray-blue, the flat trajectory. He said it might have appeared smaller in size when it disappeared.On land, from the point where he first noticed it to where it vanished is a distance of about 15 miles.I pulled off the freeway and parked to watch the sky, and he pulled in a minute later. I saw nothing else unusual. He was glad I had seen the object, too, so I didn’t dismiss it as a light reflected in his car’s windshield.I have not been able to find anything on the web about similar sightings at that time.