On the internet you have the Movie Car Database in which film fanatics keep track of which make and type of car was seen in which movie or TV series. And then they add a photo. The quality is not always optimal and the list is never exhaustive. But it is nice to have a look. The complete list.
By the way, Fiat fans are very good observers and sometimes they have a lot of knowledge. Just look in the database for 127 Coriasco. Rare car but spotted anyway.