Here's (http://www.rivkat.com/cms/index.php?set=fiction&category=supernatural) the Night Moves series. This one (http://ze-pink-lady.livejournal.com/114761.html) is life-scarring and therapy-inducing in the omfcracktastic way because Impala!Sam keeps wanting to call Dean "Daddy." Here's (http://mutelorelei.livejournal.com/97489.html) a fic list with a whole section on Sex Involving The Impala. I, um, don't know how many of these I'd actually call recs, but they're invariably fun to read, anyway.

And yeah, I'm not sure either what's up with Sam and the normal thing. I wonder how well he would have done in that life.