Ok so this a really random fic request.

I'm looking for a specific story I read a long time ago, and this is what I remember of it. I'm pretty sure it was before we knew that the Trickster was Gabriel, and for some reason having to do with Sam, (to prove a point or something?) he made Dean fall in love with the Impala, like to a level way more intense that he is already in love with the Impala currently. So basically Dean was massively in love with the Impala and turned on by it and it got to the point where Sam glimpsed Dean uh.....doing things with the gear stick. ;)

I assume it was a cracky story, and I remembered it the other day, and now I can't stop thinking about it, and trying to remember what it was about! I'd be really grateful if someone could help me out !!!! :)
Thanks guys!