I was driving to work in Larne along A36. As I was driving I looked out to my right and I could see an oval object in the distance bobbing up and down in a vertical manner. It was nothing I had ever seen before so it caught my attention. I slowed down to get a better look. It was continuing to just go up and down with ease at some great speed. Then all of a sudden it shot clean up into the sky beyond view. Quickly it reappeared and did the same thing. I was amazed and didn't fear. I tried to get a good look at what the object was and at the time I put it down to something that obviously could be explained. However, I searched for an answer but nothing could move at that speed or behave in that manner. It definitely was metallic as I could see the shine come off it. To this day I have never spoke of it, in fear of being ridiculed and being called crazy. However, it did happen and surely someone else out there saw it too