Isn't this a line from the film Christine?
"There's nothing that smells better than a new car - 'cept maybe for [word I probably can't use here except in NWS]" says the old guy selling the haunted car.
When I was a kid and we didn't have a car, one of the things I disliked about getting a ride in other people's cars was the smell. Adults always said it was the petrol, but I think it was actually the plasticky, stale air smell. Oil, though, whether on a bicycle chain or burning off a motorbike, smells good to me. But nowhere near as good as olive oil with a bit of garlic in it...