I agree with Diehard. There are times I'll be watching a show or movie and I'll have my laptop with me...so as I see cars i recognize I'll add them. If I don't, then I'll search through car listings I think it is until I find one that matches. Usually I don't put years, but I'll put Make and Model and star info. I did that for the 3 seasons of Ghost Whisperer. Then I rented Season 1, filled in the spots. Now I have to rent Season 2 and we're almost done with Season 3 so I'll get that once it comes out.