THREE (3) very bright lights in elongated triangle shape travelling at low speed wink out simultaneously.Driving home on the street we live on, we watched three (3) very bright yellow/white lights in a stretched elongated triangle pattern traveling parallel to our truck above the roof tops of the houses that line the street and the empty water canal behind these houses. It looked close to me. a logical guess would be about one eighth mile away and maybe 500 feet in altitude.It traveled parallel with us, but faster than us for 8 to 10 seconds, then all three (3) lights winked out at the same time. This is why I believe it was one (1) object, not three (3) separate objects. we were driving at 25 MPH. It's a residential street. There was no sound from the object what so ever. If I was to guess the length of the object from the front light to the rearward most light, I would say right at 200 feet long. It was clear out and we could see the stars. There was wisps of very faint clouds, but nothing that blocked out the stars. My wife and I continued driving passed our house and down the road looking for it, but we couldn't find it again.The object was traveling at about 40 mph. Too slow for an aircraft, plus there was no sound.