1) went caving June 28; afterward, we were driving toward Rochester (west bound); sighting was a few miles before exit 42. I was a passenger in the car.2) I had been watching another passenger play a phone game (through the window reflection) and then looked up and there it was, ahead of us.3) I thought it was a chinese lantern, but upon further research of what they look like, this was in no way a chinese lantern. 4) From our driving perspective, it did not look to be moving at all. It just hovered.5) I probably freaked out a bit. I pointed it out to the other passenger, whom thought it was interested and we concurred it was probably a chinese lantern. The driver was on the phone, so I couldn't show him. I was a bit upset that we couldn't pull over and check this thing out. If I'd been driving, I would've pulled over for pics.6) we drove past the object, so it would no longer be seen once we were a distance away. *The object seemed quite large for a flame. Even fires can be smaller and not so well formed. The issue is that it had no casing, like how a chinese lantern would have. The entire thing was a perfect flame that shrunk and grew in intervals. Imagine about 8 matches lit and put together (but much larger, and nothing underneath it to be burnt). It was well rounded like a teardrop. the bottom being round and the top coming to a point(s), as the flame did change a little bit as it burned. *I call it a flame, but it was so much larger than I would ever expect a flame to be. It might have been somewhere between 3-6 feet in width. *There was no smoke.