Triangle UFO

ok last year on my bday 5/7/2007 (it was rather late it was about 1-2am before i got home) for my 19th i had a very crazy experience, i had spent the evening at my parents house in i was heading east bound on I-94 and i was about home when something stright out along the freeway cought my eye quickly the further i headed towards my place the better i could see it and it was the classic black triangle with 3 white lights and a large red light in the middle. just as i was passing back over the free way i pulled over and waited for a couple minutes and it actually flew right over my head it was totally silent and flew fairly slow for an air plane has anyone else experience this around the Ypsilanti/Ann Arbor, mi area?