I was driving over traffic lights when it first caught my eye it was very bright i live on the birmingham flyt path so i'm used to seeing aircraft on this route at first it looked like byplaine i pulled over to get a better look i couldn't see it properly so i took my sunglasses off this is going to sound daft but when i took my sunglasses off to get a clearer look it had gone i put my sunglasses back on and i could see it again but couldn't get a really clear look at it . i could just make out what i thought were lines in the middle of it but they were moving i only had a view of the front so i couldn't say if it went all around the the objet. not long after it just moved out of view