Directed by: Don Lusk, Ray Patterson
Starring: Mel Blanc, Daws Butler, Hamilton Camp, Jon 'Bowzer' Bauman
George Jetson: That's grass. I read about it in ancient history.
Jane Jetson: Where's your father?
Elroy Jetson: You're standing on him.
Fred Flintstone: It's the time machine, Mr Spacely - It's kaputt.
Barney Rubble: Yeah, and they can't kaputt it back together again.
Continuity mistake: When George's wife asks him what made him drive all the way out here, their car is on the back of a large dinosaur at that moment. When it cuts to a closer angle for his reply, suddenly they are on a dirt road.
