The Great Gazoo introduced plenty of wrinkles into the Flintstones' prehistoric world. In "Jealousy," though, the little green guy showed us what Barney would look like as a "Barbara."

For this episode, Wilma wants Fred to take her to a ball, but he has a bowling game he doesn't want to miss. So instead, she calls an old, hunky boyfriend to be her escort (note: all of Wilma's exes are hunks), and if you haven’t guessed from the episode title, this decision doesn't exactly sit right with Fred.

Pretty soon, he leaves his bowling ball in the gutter to crash the ball instead. There, seeing Wilma dancing with another man drives him to ask the Great Gazoo to create a date for him to make his wife feel as jealous as he feels. That's when Barney gets his makeover.

You'll have to revisit the episode to see the play-by-play, but let's just say that comedy ensues on the dancefloor, and the scene ends with Fred and "Barbara" speeding away in a sweet little red ride that's different from the Flintmobile we're used to seeing Fred driving.

Modeled after a Ferrari, the "Rockerrari" only appears in this episode of The Flintstones, so it's worth taking a moment to appreciate this overlooked vehicle in the show's history. Throughout the show, there are many cool cars carved out of wood and stone, from a sporty racer fashioned from a pointy-ended log to Fred's rad motorcycle, complete with a candle for the headlight.

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1960scars

Do you know the family cars from classic Sixties sitcoms?

"Jealousy" was an episode that premiered in 1966, right when driving a Ferrari was inarguably the coolest choice a motorist could make — if one could afford it! In 1965, the Ferrari racing cars were just sensational — dominating the World Sportscar Championship for a three-year streak of winning designs. Add to that, in the Fifties and Sixties, the road cars had this mysterious quality because drivers could make custom choices, so no two cars were quite the same.

One thing these Ferrari cars did have in common — they were two-seaters, and that's what you see in the Rockerrari, too. A cartoonish version of a Ferrari, Fred's sleek sportscar has thick low tires that stretch across the width of the vehicle. The wooden sides are crafted in curves and though Fred is frowning in this scene, with the top down and that ponytail on "Barbara" whipping in the wind, the caveman is the picture of cool when it comes to cruising in the 1960s.

You have to wonder if it’s a coincidence then that the very next year, Ferrari came out with one of its most enduring and popular designs: a two-seater called Dino.

Is this possibly a nod to The Flintstones?

No. No, it definitely is not. Dino is named after Ferrari founder Enzo Ferrari's son Alfredo, whose nickname was Dino.

He's the one who convinced his dad to make this car design, introducing the first (somewhat) lower-cost Ferraris ever developed. This original Dino design is still part of the Ferrari brand today.

Are there any other overlooked cars from The Flintstones you love?