Two friends and I saw a triangular-shaped hovering aircraft which quickly sped away when we stopped to look at it.

In the winter of 1995 two friends and I were driving home from a Dallas Freeze/ Fort Worth Fire minor league hockey game.  We were driving down a particular street in Cleburne, Texas and all three saw something in the sky relatively close to the ground.
This area is now very developed, but back then was somewhat dark and undisturbed except for two local churches in the neighborhood.  We turned onto a dead-end road and pulled over to get out and see what the thing in the sky was.
It was night, so it was hard to make out a particular shape, but not impossible.  We could, however, see three bright lights in a triangular pattern.  Being an avid reader of aircraft publications, I at first thought it resembled an F-117, but it was hovering.  I knew that because it was hovering, that could not possibly be what it was.  It was also very quiet and within 500 feet of the ground.
Almost as soon as we got a good look at this object, it sped away without a sound and from a standstill.
Witness indicates that the date of the incident is approximate.  PD