The Flinstones' car
I forget what episode it is but Fred is complaining that they are going to be late and Wilma keeps running back and forth and finally she's ready, they get out to the car, and Fred doesn't go anywhere. Why? Because he forgot his keys.
What keys? It's a peddle car. Duh! I think there was one where they run out of gas, too. LOL
I am not a troll, but I believe in them since I see them every day on IMDB.