12/10/11 at aprox 1AM CST seen from car driving south on Camp Cardinal Blvd in Iowa City, IA. Street was dark/not many street lights nor other cars on the road. I was driving on an incline, so my line of sight was not only looking ahead, but up at the dark sky. All of a sudden, out of nothing (blackness) overhead in the south-eastern sky, a row of 3 neon green lights appeared, that looked to be lined up evenly on the back of what I perceived to be something solid. When it first appeared, it seemed to be stationary, but after a split second, out of each of the 3 green lights, came a trail, yellow in color, that curved upwards, propelling the object up and out of sight within two more split seconds. It did not cross much of the sky, but dissapeared into nothing, just as it had appeared out of nothing. My sense was that either it was flying at "warp speed" and it just left the area too fast to register much of its departure, or it actually became invisible again, just as it must have been before the green lights had appeared. Judging from how clear I could see the detail, it could not initially have been that high in the sky. It seemed to be in the direction, from my judgement, of the IA City airport, though, though it could have been beyond the airport, and just large enough to be seen so clearly from my viewpoint. Wanted to report this on the chance that others saw the same thing, to add to the reports credibility. If no one else reports this sighting, then it will remain a private wonder to me.