Glowing cigar craft hovering over Middle Country Rd

We noticed a large glowing object hovering low in the sky from our rear window(our house is situated on higher terrain than surrounding area).We jumped into the car and raced to it to get a better look (2000 ft away according to google earth measurement).It was stationary and silent approximately 100 ft in the air above intersection of Middle Country Rd(rte 25) and Boyle Rd in Selden. Odd that only one other person in another car pulled over to observe it as rte 25 is very heavily travelled. All surrounding sound seemed muted. The object was large(possibly 100 ft long x 20ft high). It looked mettalic and glowed. It had translucent panels which reminded me of windows and what seemed like shapes or figures looking out. It moved very slowly and silently westward for 150 ft then reversed back to original spot. This lasted 5 minutes, at which point it slowly moved south out of our view. Odd that we never discussed our experience until a year later. I look up into! the sky every night since then.
 d