I saw a gigantic triangular craft with 3 white lights on each tip glide silently just above the trees, alongside me as I drove .

I was driving, with my friend in the passenger seat on route 10, towards West Hartford.  I don't remember the exact time, but it was at night, & I know the road well--it had no buildings or street lights.  Just a long, dark, wooded country road.  My friend was talking, & at some point, I noticed 3 white lights, forming a *huge* triangle (I thought maybe a city block), going alongside me--silently--(our windows were open, it being a very hot summer night) just barely above the trees.  I had a long time to look at it & go through the "checklist" of whether it could be some kind of plane or planes, & I remember trying to figure out if it was all one craft.  I remember concluding it was one craft--I think because I saw that between the lights, the stars were blocked out.  I questioned my senses, & whether I was jumping to conclusions that it was a UFO, because it happened to be that only 2-3 days before, I had finished reading Communion.  But in the end, I couldn't question the simple fact that I had rationally gone through the checklist:  it couldn't be any legal man-made craft, because there were no blinking lights nor red lights.  (My father was a pilot).  & then of course, it made no sound.
However, I was afraid to say anything to my friend, because she's ultra "main-stream" & scientific--just not the type I'd expect to believe in UFO's or aliens.  I thought she'd make fun of me & come up with some sort of explanation besides UFO.  But then she finally stopped talking & said, "hey, do you SEE that??!!"  Me: "yeah, I've been watching it for about 10 minutes".  Her: "That can't be a plane--there's no blinking or red lights… That's a UFO!!"  ME (In a totally freaked out tone): "I knoooow!!" & then a couple of seconds later, it just disappeared.