Looks like a Star Wars ship,without the top, smooth, silent, no lights, large and low to the ground..

Old UFO report.
This sighting occurred in the early 1970's on River Road in Wilmington, NC around 2 am in the morning.  I am reporting it now because I am older and have heard of similar objects being seen on UFO tv reports.  So what the heck, I'll tell what I saw and maybe it will do some good.
I was in my convertible traveling north along River Road about 2 am.  It was a clear night and the stars where out, no fog or clouds.  Then a very large craft came over the trees, I was very scared and thought 'what if I'm abducted'.  I pulled my car over so as not to draw attention to myself.  It was massive, about the width and length of a football field.  The shape reminded me of one of those Star Wars big star ships like the one at the beginning of the 1st episode but it didn't have a large top area, it was smooth and triangular, at the end it had 3 very large round engines just like the Star Wars ship.   The color was identical to the sky, when it went over me it blacked out the stars but looked like a hole in the sky because of the color match.  
It was moving slowly, I'd say not much more than 35 mph and just above the trees, about 120 feet (tree hight 80' plus another 40').  It was dead silent, no noise at all and no lights, no windows that I could see,  As it pa! ssed, heading south, that's when I saw its features.  
I watched until out of sight then got out of there.  I've kept it to myself until recently and then joked I saw a UFO then woke up.  But, what the heck, if will do some good or maybe someone else will recognize the description.
I wonder what they have been doing all these years.  Obviously not attacking.  As I see it, if you have the means to travel like they must, you have access to all the resources you would ever want so mental growth would be more of a priority than desires to acquire things.  Hope this helps.
Witness indicates that the date of the sighting is approximate.  PD