It was white/light yellow and then turned green at the end. At first I wondered if it was a firework because it wasn't too high in the sky but it did not act like a firework and this was a random spot on the highway. And also the angle. There were no sounds that I heard with it, however I was on the phone speaking with family at the time so there is a chance I missed a sound.It was perfectly in front of me! It looked so much like a giant and remarkably close shooting star... I was wowed by how it turned green at the end. I really wish I had video of it.