When I was young, I used to watch two drops of rain roll down window and pretending it was a race, I seriously thought that no one else did this! Maybe I wasn't such a weird child. I would do this in the car all the time!
When my cats are home alone, if someone drives up and opens their car door, they get inside. They also leap into moving strollers (with babies inside). Who knows what theyd do if someone came to the door (sigh)