I added the pictures, but some where already listed and others not worth listing: the first limousine is just a block thing, to look like the Lincoln/Cadillac limousine, but nothing precise; the background Ford is probably made to look like a Taurus, like the other that is listed.
http://www.imcdb.org/movie_385690-Family-Guy-Presents--Stewie-Griffin-The-Untold-Story.html