Greenish-bluish "asteroid" comes to dead stop in sky and simultaneously turns to red oval light.I was getting on Rte. 2, headed towards East Hartford, from Rte. 3. I looked to my right, and saw something falling in the sky. It appeared to be an asteroid or falling object. It had a rather large tail behind it. It was a bluish-greenish light, quite bright. It fell very quickly; I saw it for approximately 2 seconds. Suddenly, it came to a dead stop in the sky, while simultaneously turning red, as if it were a brake light. The red light appeared to be rather large and oval in shape. This happened over a fraction of a second, then the object completely disappeared. I am curious to know what it could have been.