Something in the Sky?

About 5 and a half years ago I was living with my family in Massachusetts. We went over to my Uncles house for a visit. My parents, brother and I left my uncles house at about midnight. We were driving past a field buy my house when I saw 3 round lights, and a shadow of some kind of aircraft (space craft?). They were just hovering about 50ft above the field. It wasn't moving at all, just motionless in the sky. It was also like I was the only one in the car who saw it.

At the time I just chalked it up to my creative imagination, but looking back now, there was no way that I made it up. I have no idea of what I saw, but I was the only one meant to see it. I've told a few friend this story and they all told me that I made it up. I feel so alone with this experience since no one will believe me. Has anyone one else had an experience like this?