Donnie and Casey went back to work on the old car.

"So, you find the problem with that clutch?" Donnie asked.

"I found part of the problem!" Casey replied, pulled a chicken from under the car, and screamed, "Hey, Mikey! Keep your chickens outta the barn, man!"

The chicken ran out of the barn.

Casey felt really guilty about the whole thing about going after Speed Demon alone.

"Listen, Donnie. I'm sorry I went after Speed Demon without you," he apologized.

"It's fine. Me and the guys have been making our own plan to bring that freak down," Donnie remarked.

"Donnie, you and I know the hot rod is the best chance we got. We need to team up on this," Casey insisted.

"I don't know," Donnie sighed.

"I need your sweet scientific genius, Don. Please?" Casey remarked, stretching the "please".

Donnie sighed then answered, "All right, I have an idea. A crazy, awesome idea!"

~Time Skip~

"This. Is. Amazing!" Casey complemented once they were done.

"Yeah, I know. And it's almost ready. I just have to figure out the problem with the artificial intelligence for the onboard computer system," Donnie explained.

While Donnie and Casey were working on the computer system, a chicken snuck into the barn. It hopped on the work table, knocked over the mutagenic fuel, and it pecked at it.

"Here chick chick chick. Where are you, little chicky chicky chick chick?" Mikey called, carrying another chicken.

What he saw next was pretty crazy.

"Oh, snap!" he exclaimed, dropping the chicken he had.

"What?!" Casey wondered.

They turned around to see what Mikey was seeing.

"Holy toledo!" Donnie yelled.

The chicken now had a huge brain on her tiny head. She jumped off the table and walked towards the car.

"Oh, not again! Mikey!" Donnie exclaimed.

"Just what I need, another mutant!" Casey complained.

The chicken jumped into the driver's seat and started pecking the keyboard.

"Whoa! What's she doing?!" Mikey smiled excitedly.

"It's...It's communicating with us! Those are complex equations! Maybe we don't need artificial intelligence. Maybe we just need--" Donnie replied.

"Dr. Cluckingsworth, M.D.!" Mikey interrupted smiling.

"Uh, yes, maybe Dr. Cluckingsworth," Donnie said.

"M.D., bro. M.D.," Mikey corrected.

"Um, so, doctor? Can you interface with the hot rod's computer?" Donnie asked.

Dr. Cluckingsworth clucked in response and pecked at the keyboard again. Donnie and Casey fist bumped each other.

After they finished, the others came out in front of the barn to see what was going on.

"All right, Donnie, what are we doing here?" Leo asked.

"I give you..." Donnie began.

The barn doors opened and Casey started the engine. The old car now had the Kraang tech from the ship under the house. It pulled out for the others to see.

"The Turtle Racer!" Donnie finished.

"Whoa," they all said.

"This looks incredible, you guys," Jamie complemented.

"Thanks, J," Casey smirked.

Dr. Cluckingsworth clucked in the cage behind the driver's seat.

"So your co-pilot is a chicken?" Raph asked.

"She's the onboard navigator!" Casey replied.

"You guys really think this 'car' is gonna stop that maniac?" Leo wondered.

"Without a doubt, Leo. With this baby, Casey Jones can't be beat!" Casey answered.

"Well, that's it. You're gonna end up turning into street pizza," April said.

"Street pizza? That's like one of my top ten favorite pizzas!" Mikey smiled.

"Why am I not surprised?" Jamie asked.

"Don't worry, April, with all the Kraang technology we put into the hot rod, it's one of the safest cars on the road," Donnie assured.

The intelligent chicken clucked as a glowing, green egg popped out and landed in the small metal basket behind her.

"What was that?" Raph wondered, eyeing the egg.

"Oh, that's a highly volatile, radioactive mutagen egg. But don't worry. It's perfectly safe. Sorta," Donnie answered, not really sure.

"Well, that's really reassuring," Jamie groaned sarcastically.

~~~~~~~~~~~~~~~~~~~~~~~~~~

A/N They rebuilt the car, now it's time to get Speed Demon!