Aliens over Big Sur

I went out one night to see the meteors go crazy, but it turned out to be a little bit weak on the meteor part. And then the most interesting thing would be when cars would crest over the hill to come towards me. I was wondering… if someone from a few thousand years ago were to be transported in time to be standing there with me — would they have any concept of the car being driven by a human, or would they just think it is an alien ship? I mean, if they could not see inside (it was dark) — would people have any idea that the car was a human-created and powered-device, or would that notion not even enter their heads?