Was traveling on 81s towards harrisburg,pa, was on what the locals call lavelle mountain.Just all of a sudden this object appeared over the interstate and appeared to hover stationary for like 20 seconds and quickly went into the trees on my right at a high rate of speed. object appeared quite large. at first i thought it was some type of drone but it moved too fast to be one,kinda looked like a lunar lander in my opinion. i was shocked by what i saw and got emotional. when i had passed the spot where i thought the object would be but found nothing.