Interstellar distances are vast. Even with a sufficiently advanced technology indistinguishable by us from magic, traveling to a foreign planet would still be a non-trivial undertaking. I can't imagine a sophisticated and technological civilization mounting an expedition to our planet for the purpose of making "beep-beep" noises in front of some poor farmer whom no one will believe anyway.
It's clear that you can't imagine a lot of things.
I've never felt that the limits of your imagination were the parameters of what we normally construe as reality.