Ok, but it's not very believable, and why I don't usually tell it.
I was about 16 and asleep in my bed when I woke to what sounded like a large generator whirring.
No variation in sound, just one long steady fairly loud hum.
Next I saw very bright lights outside through the curtains, and I figured some idiot was playing games in a 4x4 with spotlights or something.
The sound never changed though like you would expect if it was vehicle, but the lights were moving around the house and every window I went to, the lights were going around the next corner.
We didn't have fences around the house as we lived outside of town on a fair large property.
I went straight to the other side of the house in the living room and pulled the curtains open and there it was, dead center right in front of me outside the window about 15-20 feet from the house.
It looked a lot like one of those old wooden toy tops that you wind the string around and throw down, but more rounded on the top and there was some sort of spotlight on the top of it.
The body of it seemed to be a grayish metallic.
It wasn't spinning, but just hovering there about 2 feet off the ground and it changed where the light was shining by turning the entire body (or whatever)
At some point a few seconds later it went straight up and I lost track of it.
It moved way to fast for a living being I thought, so I eventually decided it was possibly a drone of some sort.
When I got up for school the next morning I told my Mom about this weird dream I had (when I woke up I thought I had just dreamed it) but she told me it wasn't a dream and that she had seen the same whatever it was out of her window also.
I went out in the morning and I visually scrubbed the entire yard and around the house for marks of anything out of the ordinary, but never found any clue whatsoever that it had ever been there.
Even after I saw it, I thought for sure I would go outside and find tire tracks or something, but that was not the case.
I asked her what she thought it was, and all she would do is shrug her shoulders and not answer.
After I got older she said things a lot like that happened around there before, but she was concerned that it would scare us kids so my Father and her never said anything.
The Amtrak car looking one was about a year after this one, and we had about 15 adults and kids over for a BBQ that evening, and people were going in the house and bringing chairs out to watch that one.
The next day we heard over 150 people reported seeing the exact same thing. (physical description, path that it took and all)
Our house was outside of the town area by a couple of miles and we didn't have any neighbors withing a few miles.
There was/is Stead airforce base about 80 miles to the southeast of us, but that thing didn't look or act like anything I had ever seen or heard of before.