"I know how you feel." Dean shrugged. He'd never admit that he really liked it this way, that this was pretty much what he'd always wanted - the mockery Sam would deliver would likely be endless.
"Just wanna doublecheck the converters, make sure your mainshaft is stable." Dean realized he was probably speaking Chinese to his baby brother, so he tried to think of an way to explain it that made sense. "Basically, this houses most of the big gears that make the car go, so if any of 'em are loose or don't hook up to the mainshaft right, nothing's gonna happen when you rev up."
When Dean heard Zeppelin come on the radio, he nodded a thank-you to Sam, grinning as he took another pull of beer.