I was driving early afternoon, a round shape big white shiny object appears in the sky about 300-500m above ground, and seems to be moving/turning. It's way too early for stars at this time, around 18:00/6:00PM and in Sweden it's "daylight" this time of the year. At first I thought it was a star, but way too big. The object is changing direction and moving fast away from me, I can follow it and see it gets smaller and then suddenly disappear, I was still driving but kept looking for the object and about 5-10km further down the road I see it again for a short time but very small and then disappear again. It was not a helicopter or a drone and something I never seen before, the movement when it was "turning/ change direction" was completely new to me. It covered a to big distance for being a drone and was to round shaped for being a helicopter.