Took place in under a second, drone-like, traveling potentially 100-300 mph, extremely bright, covered in lights.

Event took place in under 1 second.  I was the only witness.  Can't confirm this was a UFO, but not sure what else it could be.  The best explanation I can describe is this: Walking down a street on Cal Poly State University, took a right into a courtyard/grassy area between the Math/Science buildings, and almost immediately I saw what looked like a large drone (although couldn't tell what size or how far away it was), completely covered in bright, LED-like lights traveling at an insane speed (maybe 100-300 mph?), and within split seconds it vanished/faded away.  I had no drugs in my system, had sufficient sleep the night before, and I cannot imagine this was simply a hallucination.  I can't imagine this is simply a drone because what would explain the insane speed, vanishing, and no one else in sight?  It was 6:35 PM and completely dark outside.  The only other thing I could think of was maybe I looked at a streetlight for too long and it took a second for ! my eyes to adjust to the dark again, but I tried experimenting with this after the fact without any success.