This sounds like uneducated people seeing two things: consumer drones and just normal aircraft. They sell drones both online and at your local electronics store. Also, how would someone know it's "car sized" or any other size without a radar? Just looking isn't good enough.
Consumer drones have collision lights that look all fancy. They are also in the FAA jurisdiction so there's nothing the locals can do to stop it because it's not something they deal with, even if flying at night is illegal for non commercially licenced UAV operators.
If it's a secret drone then it doesn't have collision lights. If it doesn't have lights you can't see it at night.
Even after watching the videos I think you can figure this out a priori without the videos - drones exist and people have them, lots of them.
Consumer drones have collision lights that look all fancy. They are also in the FAA jurisdiction so there's nothing the locals can do to stop it because it's not something they deal with, even if flying at night is illegal for non commercially licenced UAV operators.
If it's a secret drone then it doesn't have collision lights. If it doesn't have lights you can't see it at night.
Even after watching the videos I think you can figure this out a priori without the videos - drones exist and people have them, lots of them.