"Dammit Sam, watch where you're going!" Dean shouted, suddenly throwing his arm out towards the steering wheel.

"What the hell, man?!" Sam retorted, irritably brushing the long hair out of his eyes with one hand.

"You almost went up on the curb," Dean explained, trying to catch his breath. He'd only had Sammy at the wheel of the Impala for around ten minutes, but he swore he'd already experienced approximately thirty heart-attacks. Hunting demons was nothing; teaching your newly-17 brother to drive? Definitely scarier.

"Sorry," Sam sighed. He was inwardly cursing himself for disappointing his older brother. Ever since Dean had learned to drive (at a very young, most certainly illegal age), Sam had been itching to get behind the wheel. Now that he was actually trying it though, he found it wasn't going to be as simple as pressing his foot on the gas and cruising off at blazing speed. In reality, even ten miles per hour seemed an all too possible opportunity for disaster.

"Okay, let's start again," Dean began, mustering up his patience and trying to appear collected. He loved Sammy, but the kid had a freakin' lead foot. He was more nervous than he'd been on any hunt, but he certainly wouldn't let Sam see that.

"First, step on the clutch," Dean instructed, watching closely as his brother followed his directions. "Okay. Good. Now put her in neutral."

Sam did as told, keeping his foot firmly on the clutch as he changed the gear. At Dean's command, he moved the gear shift into first gear.

"Alright. So now move your left foot off the clutch as you press down on the gas with your right foot."

Having watched his father and brother countless times and tried it a few, Sam gently released the clutch and lowered his foot onto the accelerator.

"Nice job," Dean praised, letting out a breath he hadn't been aware he was holding.

Desperate to earn more hard-won praise from his brother, a stressed Sam let his heavy foot take control again, lurching the sleek car forward. He winced at the expression on Dean's face. "Sorry."

Dean waved off the apology. "Don't say sorry! Did I ever tell you that on my first time driving, I totally missed the road on a turn and drove on to some random old guy's front lawn? He came out yelling at me… oh, and then the time I forgot to use the clutch while changing gears! Baby made the most horrible grinding noise; it was like boiling a cat. I thought Dad was gonna whip my ass."

Sam smiled at that image. "Nice job," he said sarcastically. "I guess everyone has to start somewhere."

"Yeah, even I wasn't always the incredible driver I am today," Dean admitted with a smirk, "it's a miracle Baby's still around, to tell you the truth. I kinda put her through a lot in the first few months."

Sam laughed, seeing the guilty expression of his usually cocky big brother.

"Anyway, point is you're really not doing too bad. I'm just a little protective of my car, is all."

Sam snorted. "A little protective?" he queried teasingly, raising an eyebrow. "Dude, you're so obsessed with this thing that I've been expecting a save-the-date any day now."

Dean shot him a mock-wounded glare. "She's not a thing! Bitch."

"Jerk."

Still laughing and without much thought, Sam stepped lightly on the gas and moved the car off at a steady pace, following the curves of the quiet road cleanly. He looked over to see Dean grinning at him in admiration.

"Guess all you needed to do was relax a little," Dean mused.

It was one of the most useful pieces of advice that Sam had heard in his entire lifetime.